APA aipamena

Salvy, S., Roemmich, J. N., Bowker, J. C., Romero, N. D., Stadler, P. J., & Epstein, L. H. (2009). Effect of Peers and Friends on Youth Physical Activity and Motivation to be Physically Active. Oxford University Press.

Chicago Style aipamena

Salvy, Sarah-Jeanne, James N. Roemmich, Julie C. Bowker, Natalie D. Romero, Phillip J. Stadler, and Leonard H. Epstein. Effect of Peers and Friends On Youth Physical Activity and Motivation to Be Physically Active. Oxford University Press, 2009.

MLA aipamena

Salvy, Sarah-Jeanne, et al. Effect of Peers and Friends On Youth Physical Activity and Motivation to Be Physically Active. Oxford University Press, 2009.