Παραπομπή σε μορφή APA (7η εκδ.)

Perry, W. G. (1970). Forms of intellectual and ethical development in the college years: Scheme. Holt Rinehart and Winston.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Perry, William G. Forms of Intellectual and Ethical Development in the College Years: Scheme. New York: Holt Rinehart and Winston, 1970.

Παραπομπή σε μορφή MLA (9th εκδ.)

Perry, William G. Forms of Intellectual and Ethical Development in the College Years: Scheme. Holt Rinehart and Winston, 1970.