American Psychological Association. (1999). Publication manual of the American Psychological Association (4th.ed.). Washington D.C: American Psyschological Association.
Chicago Style CitationAmerican Psychological Association. Publication Manual of the American Psychological Association. 4th.ed. Washington D.C: American Psyschological Association, 1999.
MLA CitationAmerican Psychological Association. Publication Manual of the American Psychological Association. 4th.ed. Washington D.C: American Psyschological Association, 1999.
Warning: These citations may not always be 100% accurate.