Calvin, A. D. (1961). Psychology. Allyn & Bacon.
Lua i Stíl Chicago (17ú heag.)Calvin, Allen D. Psychology. Boston: Allyn & Bacon, 1961.
Lua MLA (9ú heag.)Calvin, Allen D. Psychology. Allyn & Bacon, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.