Não informado. (1972). Advances in educational psychology. University of London Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Advances in Educational Psychology. London: University of London Press, 1972.
Lua MLA (8ú heag.)Não informado. Advances in Educational Psychology. University of London Press, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.