Cita APA

Freeman, K. S. (2011). AGING: U.S. Lives: Longer but Sicker? National Institute of Environmental Health Sciences.

Chicago Style Citation

Freeman, Kris S. AGING: U.S. Lives: Longer but Sicker? National Institute of Environmental Health Sciences, 2011.

Cita MLA

Freeman, Kris S. AGING: U.S. Lives: Longer but Sicker? National Institute of Environmental Health Sciences, 2011.

Atenció: Aquestes cites poden no estar 100% correctes.