Some of the material on this web site is original. When original content is present, unless otherwise noted, it has been written by the web author (John D. Mayer). If the material appears unique to this site, then you can cite the material as coming from here. For example, if you want to cite the section "What Are Parts of Personality?" you might try something like the citation below.
Mayer, John D. (Retrieved August 9, 2006). What Are Personality's Parts (n.d.) from http://www.thepersonalitysystem.org/PFA What Are Personality's Parts/What are Personality Parts.htm
If another author is listed, cite the other author, of course.
Preferable to the above, however, is to cite original written, published material (books and journal articles) where possible. Why? I often revise the content and structure of this site, and as I do so, web links and URLs change.
Many of the ideas and definitions on this web site actually are drawn from my textbook Personality psychology: A systems approach. For example, there is a very similar definition and discussion of parts of personality in that textbook. Wherever possible cite the book (or a journal article from which it draws) and avoid citing the site.
When the material summarizes the work of another personality psychologist, it is preferable to refer to their original work and cite that work. The material on this site often makes reference to original journal articles and/or books.
For example, when these web pages contain information related to a particular source, the source is cited according to American Psychological Association (APA) style. It might look like this (Sternberg, 1990). Then, the full reference to that citation is (or at least should be) listed at the bottom of the web page.
For a description of the APA rules, click here. (These are provided courtesy of the University of Minnesota, Crookston).