APA (7e ed.) Bronvermelding

Smith, A. L., & Biddle, S. (2008). Youth physical activity and sedentary behavior: Challenges and solutions. Human Kinetics.

Chicago (17e ed.) Bronvermelding

Smith, Alan L., en Stuart Biddle. Youth Physical Activity and Sedentary Behavior: Challenges and Solutions. Champaign, Ill: Human Kinetics, 2008.

MLA (9e ed.) Bronvermelding

Smith, Alan L., en Stuart Biddle. Youth Physical Activity and Sedentary Behavior: Challenges and Solutions. Human Kinetics, 2008.