Barroso, C. S., Kelder, S. H., Springer, A. E., Smith, C. L., Ranjit, N., Ledingham, C., & Hoelscher, D. M. (2009). Senate Bill 42: Implementation and Impact on Physical Activity in Middle Schools.

Barroso, Cristina S., Steven H. Kelder, Andrew E. Springer, Carolyn L. Smith, Nalini Ranjit, Christopher Ledingham, و Deanna M. Hoelscher. Senate Bill 42: Implementation and Impact On Physical Activity in Middle Schools. 2009.

Barroso, Cristina S., et al. Senate Bill 42: Implementation and Impact On Physical Activity in Middle Schools. 2009.