Du Preez, P. (1991). A science of mind: The quest for psychological reality. Academic Press.
Lua i Stíl Chicago (17ú heag.)Du Preez, Peter. A Science of Mind: The Quest for Psychological Reality. London: Academic Press, 1991.
Lua MLA (9ú heag.)Du Preez, Peter. A Science of Mind: The Quest for Psychological Reality. Academic Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.