APA (7th ed.) Citation

Sallis, J. F. (2007). Measuring physical activity in youth. Healthy Learning.

Chicago Style (17th ed.) Citation

Sallis, James F. Measuring Physical Activity in Youth. Monterey, CA: Healthy Learning, 2007.

MLA (9th ed.) Citation

Sallis, James F. Measuring Physical Activity in Youth. Healthy Learning, 2007.