Não informado. (1955). Physical Education. Physical Education Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Physical Education. Birmingham, Inglaterra: Physical Education Association, 1955.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Physical Education. Physical Education Association, 1955.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.