Não informado. (1993). Journal of Aging and Physical Activity. Human Kinetics Publishers.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Aging and Physical Activity. Champaign, Ill: Human Kinetics Publishers, 1993.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Aging and Physical Activity. Human Kinetics Publishers, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.