APA

Varela A. R., Pratt M., Powell K., Lee I., Bauman A., Heath G., Martins R. C., Kohl H. & Hallal P. C. (20180214). Worldwide Surveillance, Policy, and Research on Physical Activity and Health: The Global Observatory for Physical Activity. : Journal of physical activity & health.

Chicago

Varela Andrea Ramirez, Pratt Michael, Powell Kenneth, Lee I-Min, Bauman Adrian, Heath Gregory, Martins Rafaela Costa, Kohl Harold and Hallal Pedro C. 20180214. Worldwide Surveillance, Policy, and Research on Physical Activity and Health: The Global Observatory for Physical Activity. : Journal of physical activity & health.

Harvard

Varela A. R., Pratt M., Powell K., Lee I., Bauman A., Heath G., Martins R. C., Kohl H. and Hallal P. C. (20180214). Worldwide Surveillance, Policy, and Research on Physical Activity and Health: The Global Observatory for Physical Activity. : Journal of physical activity & health.

MLA

Varela Andrea Ramirez, Pratt Michael, Powell Kenneth, Lee I-Min, Bauman Adrian, Heath Gregory, Martins Rafaela Costa, Kohl Harold and Hallal Pedro C. Worldwide Surveillance, Policy, and Research on Physical Activity and Health: The Global Observatory for Physical Activity. : Journal of physical activity & health. 20180214.