Não informado. School Health Review. American Association for Health, Physical Education and Recreation.
Chicago-referens (17:e uppl.)Não informado. School Health Review. Washington: American Association for Health, Physical Education and Recreation.
MLA-referens (8:e uppl.)Não informado. School Health Review. American Association for Health, Physical Education and Recreation.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.