The reference list should include every work cited in the text. It should be ensured that dates, spelling and title used in the text are consistent with those listed in the References. In addition, page numbers are required for articles, both place of publication and publisher are required for books cited and, where relevant, translator and date of first publication should be included. It should be noted that et al. should not be used in the reference list; rather each author’s full name or surname and initials need to be spell out. Please refer to the following APA-style in-text citations and reference list.
1. In-Text Citation
A Work by Two Authors:
Research by Wegener and Petty (1994) supports...
(Wegener & Petty, 1994)
A Work by more than Three Authors:
Harris et al. (2001) argued...
(Harris et al., 2001)
If the work does not have an author, cite the source by its title in the signal phrase or use the first word or two in the parentheses.
Organization as an Author:
According to the American Psychological Association (2000),...
First citation: (Mothers Against Drunk Driving [MADD], 2000)
Second citation: (MADD, 2000)
Two or More Works in the Same Parentheses:
order them alphabetically, separated by a semi-colon
(Berndt, 2002; Harlow, 1983)
Authors with the Same Last Name:
(E. Johnson, 2001; L. Johnson, 1998)
Two or More Works by the Same Author in the Same Year:
Research by Berndt (1981a) illustrated that...
For interviews, letters, e-mails, and other person-to-person communication, cite the communicator's name, the fact that it was personal communication, and the date of the communication. Do not include personal communication in the reference list.
(E. Robbins, personal communication, January 4, 2001).
P. Smith also claimed that many of her students had difficulties with APA style (personal communication, November 3, 2002).
Citing Indirect Sources
Johnson argued that...(as cited in Smith, 2003, p. 102).
Kenneth (2000) explained...
Unknown Author and Unknown Date:
use the abbreviation "n.d." (for "no date") Another study of students and research decisions discovered that students succeeded with tutoring ("Tutoring and APA," n.d.).
Sources without Page Numbers
According to Smith (1997), ... (Mind over Matter section, para. 6).
2. Reference List: Journal Articles
Berndt, T. J. (2002). Friendship quality and social development. Current Directions in Psychological Science, 11, 7-10.
Wegener, D. T., & Petty, R. E. (1994). Mood management across affective states: The hedonic contingency hypothesis. Journal of Personality and Social Psychology, 66, 1034-1048.
More than Three Authors
Kernis, M. H., Cornell, D. P., Sun, C. R., Berry, A., Harlow, T., & Bach, J. S. (1993). There's more to self-esteem than whether it is high or low: The importance of stability of self-esteem. Journal of Personality and Social Psychology, 65, 1190-1204.
Organization as Author
American Psychological Association. (2003).
Merriam-Webster's collegiate dictionary (10th ed.).(1993). Springfield, MA: Merriam-Webster.
Two or More Works by the Same Author
Berndt, T. J. (1999). Friends' influence on students' adjustment to school. Educational Psychologist, 34, 15-28.
Berndt, T. J., & Keefe, K. (1995). Friends' influence on adolescents' adjustment to school. Child Development, 66, 1312-1329.
Two or More Works by the Same Author in the Same Year
Berndt, T. J. (1981a). Age changes and changes over time in prosocial intentions and behavior between friends. Developmental Psychology, 17, 408-416.
Berndt, T. J. (1981b). Effects of friendship on prosocial intentions and behavior. Child Development, 52, 636-643.
Article in Journal Paginated by Volume
Harlow, H. F. (1983). Fundamentals for preparing psychology journal articles. Journal of Comparative and Physiological Psychology, 55, 893-896.
Baumeister, R. F. (1993). Exposing the self-knowledge myth [Review of the book The self-knower: A hero under control, by R. A. Wicklund & M. Eckert]. Contemporary Psychology, 38, 466-467.
3. Reference List: Articles in Periodicals
Article in Journal Paginated by Issue
Scruton, R. (1996). The eclipse of listening. The New Criterion, 15(3), 5-13.
Article in a Magazine
Henry, W. A., III. (1990, April 9). Making the grade in today's schools. Time, 135, 28-31.
Article in a Newspaper
Schultz, S. (2005, December 28). Calls made to strengthen state energy policies. The Country Today, pp. 1A, 2A.
4. Reference List: Books
Calfee, R. C., & Valencia, R. R. (1991). APA guide to preparing manuscripts for journal publication. Washington, DC: American Psychological Association.
Edited Book, No Author
Duncan, G. J., & Brooks-Gunn, J. (Eds.). (1997). Consequences of growing up poor. New York, NY: Russell Sage Foundation.
Edited Book with an Author or Authors
Plath, S. (2000). The unabridged journals. K. V. Kukil (Ed.). New York, NY: Anchor.
Laplace, P. S. (1951). A philosophical essay on probabilities. (F. W. Truscott & F. L. Emory, Trans.). New York, NY: Dover. (Original work published 1814)
Article or Chapter in an Edited Book
O'Neil, J. M., & Egan, J. (1992). Men's and women's gender role journeys: A metaphor for healing, transition, and transformation. In B. R. Wainrib (Ed.), Gender issues across the life cycle (pp. 107-123). New York, NY: Springer.
5. Reference List: Other Print Sources
An Entry in an Encyclopedia
Bergmann, P. G. (1993). Relativity. In The New Encyclopedia Britannica. (Vol. 26, pp. 501-508). Chicago, IL: Encyclopedia Britannica.
Work Discussed in a Secondary Source
Coltheart, M., Curtis, B., Atkins, P., & Haller, M. (1993). Models of reading aloud: Dual-route and parallel-distributed-processing approaches. Psychological Review, 100, 589-608.
Yoshida, Y. (2001). Essays in urban transportation. Dissertation Abstracts International, 62, 7741A.
Lastname, F. N. (Year). Title of dissertation (Doctoral dissertation). Retrieved from Name of database. (Accession or Order Number)
Lastname, F. N. (Year). Title of dissertation (Unpublished doctoral dissertation). Name of Institution, Location.
National Institute of Mental Health. (1990). Clinical training in serious mental illness(DHHS Publication No. ADM 90-1679). Washington, DC: U.S. Government Printing Office.
Report from a Private Organization
American Psychiatric Association. (2000). Practice guidelines for the treatment of patients with eating disorders (2nd ed.). Washington, DC: Author.
Schnase, J. L., & Cunnius, E. L. (Eds.). (1995). Proceedings from CSCL '95: The First International Conference on Computer Support for Collaborative Learning. Mahwah, NJ: Erlbaum.
6. Reference List: Electronic Sources (Web Publications)
Bernstein, M. (2002). 10 tips on writing the living Web. A List Apart: For People Who Make Websites, 149. Retrieved from http://www.alistapart.com/articles/writeliving
Article from an Online Periodical with DOI Assigned
Brownlie, D. (2007). Toward effective poster presentations: An annotated bibliography.European Journal of Marketing, 41, 1245-1283. doi:10.1108/03090560710821161
Wooldridge, M.B., & Shapka, J. (2012). Playing with technology: Mother-toddler interaction scores lower during play with electronic toys. Journal of Applied Developmental Psychology, 33(5), 211-218. http://dx.doi.org/10.1016/j.appdev.2012.05.005
Article from an Online Periodical with no DOI Assigned
Kenneth, I. A. (2000). A Buddhist response to the nature of human rights. Journal of Buddhist Ethics, 8. Retrieved from http://www.cac.psu.edu/jbe/twocont.html
Article from a Database
Smyth, A. M., Parker, A. L., & Pease, D. L. (2002). A study of enjoyment of peas.Journal of Abnormal Eating, 8(3), 120-125. Retrieved from http://www.articlehomepage.com/full/url/
Paterson, P. (2008). How well do young offenders with Asperger Syndrome cope in custody?: Two prison case studies [Abstract]. British Journal of Learning Disabilities, 36(1), 54-58. Hendricks, J., Applebaum, R., & Kunkel, S. (2010). A world apart? Bridging the gap between theory and applied social gerontology. Gerontologist, 50(3), 284-293. Abstract retrieved from Abstracts in Social Gerontology database. (Accession No. 50360869)
Parker-Pope, T. (2008, May 6). Psychiatry handbook linked to drug industry. The New York Times. Retrieved from http://well.blogs.nytimes.com/2008/05/06/psychiatry-handbook-linked-to-drug-industry/?_r=0
De Huff, E. W. (n.d.). Taytay’s tales: Traditional Pueblo Indian tales. Retrieved from http://digital.library.upenn.edu/women/dehuff/taytay/taytay.html Davis, J. (n.d.). Familiar birdsongs of the Northwest. Available from http://www.powells.com/cgi-bin/biblio?inkey=1-9780931686108-0
Chapter/Section of a Web Document or Online Book Chapter
Engelshcall, R. S. (1997). Module mod_rewrite: URL Rewriting Engine. In Apache HTTP Server version 1.3 documentation (Apache modules). Retrieved from http://httpd.apache.org/docs/1.3/mod/mod_rewrite.html
Peckinpaugh, J. (2003). Change in the Nineties. In J. S. Bough and G. B. DuBois (Eds.), A century of growth in America. Retrieved from GoldStar database.
Online Book Reviews
Zacharek, S. (2008, April 27). Natural women [Review of the book Girls like us]. The New York Times. Retrieved from http://www.nytimes.com/2008/04/27/books/review/Zachareck -t.html?pagewanted=2
Castle, G. (2007). New millennial Joyce [Review of the books Twenty-first Joyce, Joyce's critics: Transitions in reading and culture, and Joyce's messianism: Dante, negative existence, and the messianic self]. Modern Fiction Studies, 50(1), 163-173. Available from Project MUSE Web site: http://muse.jhu.edu/journals/modern_fiction_studies/toc/mfs52.1.html
Dissertation/Thesis from a Database
Biswas, S. (2008). Dopamine D3 receptor: A neuroprotective treatment target in Parkinson's disease. Retrieved from ProQuest Digital Dissertations. (AAT 3295214)
Online Encyclopedias and Dictionaries
Feminism. (n.d.). In Encyclopædia Britannica online. Retrieved from http://www.britannica.com/EBchecked/topic/724633/feminism
Online Bibliographies and Annotated Bibliographies
Jürgens, R. (2005). HIV/AIDS and HCV in Prisons: A Select Annotated Bibliography. Retrieved from http://www.hc-sc.gc.ca/ahc-asc/alt_formats/hpb-dgps/pdf/intactiv/hiv-vih-aids-sida-prison-carceral_e.pdf
United States Department of Housing and Urban Development. (2008). Indiana income limits [Data file]. Retrieved from http://www.huduser.org/Datasets/IL/IL08/in_fy2008.pdf
Graphic Data (e.g. Interactive Maps and Other Graphic Representations of Data)
Solar Radiation and Climate Experiment. (2007). [Graph illustration the SORCE Spectral Plot May 8, 2008]. Solar Spectral Data Access from the SIM, SOLSTICE, and XPS Instruments. Retrieved from http://lasp.colorado.edu/cgi-bin/ion-p?page=input_data_for_spectra.ion
Qualitative Data and Online Interviews
Butler, C. (Interviewer) & Stevenson, R. (Interviewee). (1999). Oral History 2 [Interview transcript]. Retrieved from Johnson Space Center Oral Histories Project Web site: http:// www11.jsc.nasa.gov/history/oral_histories/oral_histories.htm
Online Lecture Notes and Presentation Slides
Hallam, A. Duality in consumer theory [PDF document]. Retrieved from Lecture Notes Online Web site: http://www.econ.iastate.edu/classes/econ501/Hallam/index.html
Roberts, K. F. (1998). Federal regulations of chemicals in the environment [PowerPoint slides]. Retrieved from http://siri.uvm.edu/ppt/40hrenv/index.html
Nonperiodical Web Document or Report
Angeli, E., Wagner, J., Lawrick, E., Moore, K., Anderson, M., Soderland, L., & Brizee, A. (2010, May 5). General format. Retrieved from http://owl.english.purdue.edu/owl/resource/560/01/
Online Forum or Discussion Board Posting
Frook, B. D. (1999, July 23). New inventions in the cyberworld of toylandia [Msg 25]. Message posted to http://groups.earthlink.com/forum/messages/00025.html
Blog (Weblog) and Video Blog Post
J Dean. (2008, May 7). When the self emerges: Is that me in the mirror? [Web log comment]. Retrieved from http://www.spring.org.uk/the1sttransport Psychology Video Blog #3 [Video file]. Retrieved from http://www.youtube.com/watch?v=lqM90eQi5-M
Bell, T., & Phillips, T. (2008, May 6). A solar flare. Science @ NASA Podcast. Podcast retrieved from http://science.nasa.gov/podcast.htm
Scott, D. (Producer). (2007, January 5). The community college classroom [Episode 7].Adventures in Education. Podcast retrieved from http://www.adveeducation.com
7. Reference List: Other Non-Print Sources
Interviews, Email, and Other Personal Communication
(E. Robbins, personal communication, January 4, 2001).
A Motion Picture or Video Tape with International or National Availability
Smith, J. D. (Producer), & Smithee, A. F. (Director). (2001). Really big disaster movie[Motion picture]. United States: Paramount Pictures.
A Motion Picture or Video Tape with Limited Availability
Harris, M. (Producer), & Turley, M. J. (Director). (2002). Writing labs: A history [Motion picture]. (Available from Purdue University Pictures, 500 Oval Drive, West Lafayette, IN 47907)
Television Broadcast or Series Episode Single Episode of a Television Series
Wendy, S. W. (Writer), & Martian, I. R. (Director). (1986). The rising angel and the falling ape [Television series episode]. In D. Dude (Producer), Creatures and monsters. Los Angeles, CA: Belarus Studios.
Important, I. M. (Producer). (1990, November 1). The nightly news hour [Television broadcast]. New York, NY: Central Broadcasting Service.
A Television Series
Bellisario, D. L. (Producer). (1992). Exciting action show [Television series]. Hollywood, CA: American Broadcasting Company.
Taupin, B. (1975). Someone saved my life tonight [Recorded by Elton John]. On Captain fantastic and the brown dirt cowboy [CD]. London, England: Big Pig Music Limited.
For more about citing audiovisual media, see pages 209-210 of the APA Publication Manual 6th Edition, second printing.