Cita APA (7th ed.)
ebrary, Inc, & Cowell, H. A. (2011). Physical activity guidelines for Americans and a review of scientific literature used. Nova Science Publishers.
Cita Chicago (17th ed.)
ebrary, Inc, i Hailey A. Cowell. Physical Activity Guidelines for Americans and a Review of Scientific Literature Used. Hauppauge, N.Y.: Nova Science Publishers, 2011.
Cita MLA (9th ed.)
ebrary, Inc, i Hailey A. Cowell. Physical Activity Guidelines for Americans and a Review of Scientific Literature Used. Nova Science Publishers, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.