Não informado. (1978). Physical Fitness / Sports Medicine. President's Council on Physical Fitness & Sports.
Chicago-referens (17:e uppl.)Não informado. Physical Fitness / Sports Medicine. Washington: President's Council on Physical Fitness & Sports, 1978.
MLA-referens (8:e uppl.)Não informado. Physical Fitness / Sports Medicine. President's Council on Physical Fitness & Sports, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.