Engler, B. (1995). Personality theories: An introduction (4th ed.). Houghton Mifflin.
Chicago (17e ed.) BronvermeldingEngler, Barbara. Personality Theories: An Introduction. 4th ed. Boston: Houghton Mifflin, 1995.
MLA (9e ed.) BronvermeldingEngler, Barbara. Personality Theories: An Introduction. 4th ed. Houghton Mifflin, 1995.
Let op: Deze citaties zijn niet altijd 100% accuraat.