Kaufmann, W. (1980). Discovering the mind. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Kaufmann, Walter. Discovering the Mind. New York [u.a.]: McGraw-Hill, 1980.
Lua MLA (8ú heag.)Kaufmann, Walter. Discovering the Mind. McGraw-Hill, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.