Hassett, J. (1989). Psychology in perspective (2ª ed.). Harper and Row.
Lua i Stíl Chicago (17ú heag.)Hassett, James. Psychology in Perspective. 2ª ed. Harper and Row, 1989.
Lua MLA (9ú heag.)Hassett, James. Psychology in Perspective. 2ª ed. Harper and Row, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.