APA(American Psychological Association, 미국 심리학회) Style은 사회과학 분야에서 일반적으로는 많이 사용하고 있다.
APA's style rules and guidelines are set out in The Publication Manual of the American Psychological Association. APA uses the Harvard author-date system which requires in-text citations and a reference list at the end of your work.
You may find this Basics of APA Style tutorial helpful.
