Feldman, R. S. (1999). Understanding psychology. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Feldman, Robert S. Understanding Psychology. McGraw-Hill, 1999.
Lua MLA (8ú heag.)Feldman, Robert S. Understanding Psychology. McGraw-Hill, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.