APA-referens (7:e uppl.)
Cook, E. P., Gaston, B. E., & Bashir, H. (2012). Understanding people in context: The ecological perspective in counseling. American Counseling Association.
Chicago-referens (17:e uppl.)
Cook, Ellen Piel, Bonny E. Gaston, och Huma Bashir. Understanding People in Context: The Ecological Perspective in Counseling. Alexandria, Virginia: American Counseling Association, 2012.
MLA-referens (9:e uppl.)
Cook, Ellen Piel, et al. Understanding People in Context: The Ecological Perspective in Counseling. American Counseling Association, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.