Cita APA (7a ed.)

Roberts, J. D., Voss, J. D., & Knight, B. (2014). The association of ambient air pollution and physical inactivity in the United States. Public Library of Science (PLoS).

Cita Chicago Style (17a ed.)

Roberts, Jennifer D., Jameson D. Voss, y Brandon Knight. The Association of Ambient Air Pollution and Physical Inactivity in the United States. Public Library of Science (PLoS), 2014.

Cita MLA (8a ed.)

Roberts, Jennifer D., et al. The Association of Ambient Air Pollution and Physical Inactivity in the United States. Public Library of Science (PLoS), 2014.