Não informado. (1955). Physical Education. Physical Education Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Physical Education. Birmingham, Inglaterra: Physical Education Association, 1955.
MLA-Zitierstil (8. Ausg.)Não informado. Physical Education. Physical Education Association, 1955.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.