What is APA Style?
The American Psychological Association (APA) is the scientific and professional organization representing all practitioners in the field of psychology. Eighty years ago a group of social scientists developed APA Style to establish standards of written communication in psychology, the sciences, and the social sciences.
The following links provide information on the correct way to list sources in APA format.
APA vs. MLA?
APA style is used by science and social science departments in colleges and universities. APA is the preferred format for research papers in the "hard" sciences (chemistry, biology, physics, etc.) as well as the social and behavioral sciences, such as psychology, sociology, anthropology, history, and political science.
MLA (Modern Language Association) style is used primarily in English and humanities courses.
APA Style Manual
The Publication Manual of the American Psychological Association, Sixth Edition, is the style manual of choice for writers, editors, students, and educators in the social and behavioral sciences. It is available at major bookstores and online (amazon.com).