APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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