Maddi, S. R. (1989). Personality theories: A comparative analysis (5th edition.). Dorsey Press.
Lua i Stíl Chicago (17ú heag.)Maddi, Salvatore R. Personality Theories: A Comparative Analysis. 5th edition. Chicago, Illinois: Dorsey Press, 1989.
Lua MLA (9ú heag.)Maddi, Salvatore R. Personality Theories: A Comparative Analysis. 5th edition. Dorsey Press, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.