Não informado. (2012). ACSM's Health & Fitness Journal. American College of Sports Medicine.
Chicago-referens (17:e uppl.)Não informado. ACSM's Health & Fitness Journal. Indianapolis, Ind: American College of Sports Medicine, 2012.
MLA-referens (8:e uppl.)Não informado. ACSM's Health & Fitness Journal. American College of Sports Medicine, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.