Não informado. (1993). Journal of Aging and Physical Activity. Human Kinetics Publishers.
Chicago-referens (17:e uppl.)Não informado. Journal of Aging and Physical Activity. Champaign, Ill: Human Kinetics Publishers, 1993.
MLA-referens (8:e uppl.)Não informado. Journal of Aging and Physical Activity. Human Kinetics Publishers, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.