APA (7th ed.) Zitazioa

Engler, B. (1995). Personality theories: An introduction (4th ed.). Houghton Mifflin.

Chicago Style (17th ed.) Zitazioa

Engler, Barbara. Personality Theories: An Introduction. 4th ed. Boston: Houghton Mifflin, 1995.

MLA (9th ed.) Zitazioa

Engler, Barbara. Personality Theories: An Introduction. 4th ed. Houghton Mifflin, 1995.