APA-referens (7:e uppl.)
Perry, W. G. (1970). Forms of intellectual and ethical development in the college years: A scheme. Holt, Rinehart and Winston.
Chicago-referens (17:e uppl.)
Perry, William G. Forms of Intellectual and Ethical Development in the College Years: A Scheme. San Francisco, Calif.: Holt, Rinehart and Winston, 1970.
MLA-referens (9:e uppl.)
Perry, William G. Forms of Intellectual and Ethical Development in the College Years: A Scheme. Holt, Rinehart and Winston, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.