APA (7e ed.) Bronvermelding
Engler, B. (1991). Personality theories: An introduction (3rd ed.). Houghton Mifflin Co..
Chicago (17e ed.) Bronvermelding
Engler, Barbara. Personality Theories: An Introduction. 3rd ed. Boston, MA: Houghton Mifflin Co., 1991.
MLA (9e ed.) Bronvermelding
Engler, Barbara. Personality Theories: An Introduction. 3rd ed. Houghton Mifflin Co., 1991.
Let op: Deze citaties zijn niet altijd 100% accuraat.