APA (7th ed.) Zitazioa

Liebert, R. M. (1993). Personality: Strategies and issues (7th.ed.). Brooks / Cole.

Chicago Style (17th ed.) Zitazioa

Liebert, Robert M. Personality: Strategies and Issues. 7th.ed. California: Brooks / Cole, 1993.

MLA (9th ed.) Zitazioa

Liebert, Robert M. Personality: Strategies and Issues. 7th.ed. Brooks / Cole, 1993.