Rahl, R. L. (2010). Physical activity and health guidelines: Recommendations for various ages, fitness levels, and conditions from 57 authoritative sources. Human Kinetics.
Chicago-Zitierstil (17. Ausg.)Rahl, Riva L. Physical Activity and Health Guidelines: Recommendations for Various Ages, Fitness Levels, and Conditions from 57 Authoritative Sources. Champaign, IL: Human Kinetics, 2010.
MLA-Zitierstil (9. Ausg.)Rahl, Riva L. Physical Activity and Health Guidelines: Recommendations for Various Ages, Fitness Levels, and Conditions from 57 Authoritative Sources. Human Kinetics, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.