Não informado. (1963). Journal of School Psychology. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of School Psychology. New York: Pergamon Press, 1963.
Lua MLA (8ú heag.)Não informado. Journal of School Psychology. Pergamon Press, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.