Sallis, J. F., McKenzie, T. L., Alcaraz, J. E., Kolody, B., Faucette, N., & Hovell, M. F. (1997). The effects of a 2-year physical education program (SPARK) on physical activity and fitness in elementary school students. Sports, Play and Active Recreation for Kids.

Sallis, J F., T L. McKenzie, J E. Alcaraz, B. Kolody, N. Faucette, and M F. Hovell. The Effects of a 2-year Physical Education Program (SPARK) On Physical Activity and Fitness in Elementary School Students. Sports, Play and Active Recreation for Kids. 1997.

Sallis, J F., et al. The Effects of a 2-year Physical Education Program (SPARK) On Physical Activity and Fitness in Elementary School Students. Sports, Play and Active Recreation for Kids. 1997.