Gaya APA

Roberts, T, B. (1975). Four Psychologies Applied to Education : Freudian, Behavioral, Humanistic, Transpersonal . Cambridge: Schenkman Publishing Company.

Gaya MLA

Roberts, Thomas, B.. "Four Psychologies Applied to Education : Freudian, Behavioral, Humanistic, Transpersonal". Cambridge: Schenkman Publishing Company, 1975. Text.