Não informado. (2012). ACSM's Health & Fitness Journal. American College of Sports Medicine.
Lua i Stíl Chicago (17ú heag.)Não informado. ACSM's Health & Fitness Journal. Indianapolis, Ind: American College of Sports Medicine, 2012.
Lua MLA (8ú heag.)Não informado. ACSM's Health & Fitness Journal. American College of Sports Medicine, 2012.
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