APA-viite

Howard S.friedman & Howard S.friedman. (2003). Personality classic theories and modern research (Ed.2.). Pearson education.

Chicago-tyylinen lähdeviittaus

Howard S.friedman ja Howard S.friedman. Personality Classic Theories and Modern Research. Ed.2. New delhi: Pearson education, 2003.

MLA-viite

Howard S.friedman ja Howard S.friedman. Personality Classic Theories and Modern Research. Ed.2. Pearson education, 2003.