Cita APA (7th ed.)
Liebert,Roberyt M. (1994). Personality strategies and issues (7th ed.). Brooks/Cole.
Cita Chicago (17th ed.)
Liebert,Roberyt M. Personality Strategies and Issues. 7th ed. California: Brooks/Cole, 1994.
Cita MLA (9th ed.)
Liebert,Roberyt M. Personality Strategies and Issues. 7th ed. Brooks/Cole, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.