Não informado. (1970). Learning and Motivation. Academic Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Learning and Motivation. New York: Academic Press, 1970.
Lua MLA (8ú heag.)Não informado. Learning and Motivation. Academic Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.