Cita APA

Janssen, I., Carson, V., Lee, I., Katzmarzyk, P. T., & Blair, S. N. (2013). Years of Life Gained Due to Leisure-Time Physical Activity in the United States.

Citación estilo Chicago

Janssen, Ian, Valerie Carson, I-Min Lee, Peter T. Katzmarzyk, y Steven N. Blair. Years of Life Gained Due to Leisure-Time Physical Activity in the United States. 2013.

Cita MLA

Janssen, Ian, et al. Years of Life Gained Due to Leisure-Time Physical Activity in the United States. 2013.