Cita APA

Littman, A. J., Forsberg, C. W., & Koepsell, T. D. Physical activity in a national sample of veterans.

Citación estilo Chicago

Littman, Alyson J., Christopher W. Forsberg, y Thomas D. Koepsell. Physical Activity in a National Sample of Veterans.

Cita MLA

Littman, Alyson J., Christopher W. Forsberg, y Thomas D. Koepsell. Physical Activity in a National Sample of Veterans.