Many criminal justice professors require that you use APA style for your citations. There is a copy of the sixth edition of the Publication Manual of the American Psychological Association at the Research & Access Desk.
Any citation style has requirements for 3 broad tasks:
1. Physical layout of document - margins, font, headers, section outlines, etc.
2. Correctly including citations to information from other sources in the document text. Often referred to as "in-text citation".
3. Format of the references for your research. APA calls this References
The Sample APA Paper (6th edition) from OWL at Purdue does an excellent job of demonstrating all of the above requirements.
Separate title page.
First page of text (p. 2) has
Must be used each time you use information from one of your sources.
Every entry on the References list must be used within your paper.
Basic format if placing all the information at the end of the sentence is (Author(s), date). This is called a parentehetical reference.
If you are using a direct quote, and adding your reference at the end of the sentence, the basic format becomes (Authos(s), date, p. #)
If an idea is from several sources, they are all listed in the same parenthetical reference.
Basic format is:
Who. (When). What. Where.
For an article -
who is author(s), when is publication date. Journals: year, newspapers: year, month, day. What is title of article. Where is title of journal, volume, issue, page numbers, doi.
Culhane, S. J., Hilstad, S. M., Freng, A.,& Gray, M. J. (2011). Self-reported psychopathology in a convicted serial killer. Journal of Investigative Psychology & Offender Profiling, 8(1), 1-21. doi: 10.1002/jip.129
For a book - who is author(s), when is publication date. What is the title of the book. Where is City, ST: Publisher.
Newton, M. (2000). The encyclopedia of serial killers. New York, NY : Facts on File.