Ray, W. J. (2006). Methods toward a science of behavior and experience. Belmont, CA : Thomson/Wadsworth.
Lua i Stíl Chicago (17ú heag.)Ray, William J. Methods Toward a Science of Behavior and Experience. Belmont, CA : Thomson/Wadsworth, 2006.
Lua MLA (9ú heag.)Ray, William J. Methods Toward a Science of Behavior and Experience. Belmont, CA : Thomson/Wadsworth, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.