Não informado. (1979). Journal of Sport Psychology. Human Kinetics Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Sport Psychology. Champaign, Ill: Human Kinetics Publishers, 1979.
Lua MLA (8ú heag.)Não informado. Journal of Sport Psychology. Human Kinetics Publishers, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.