2008 physical activity guidelines for Americans :
be active, healthy, and happy!
APA Citation
United States. Department of Health and Human Services. (2008). 2008 physical activity guidelines for Americans: be active, healthy, and happy! Washington, DC: U.S. Dept. of Health and Human Services.
MLA Citation
United States. Department of Health and Human Services. 2008 Physical Activity Guidelines for Americans: Be Active, Healthy, And Happy! Washington, DC: U.S. Dept. of Health and Human Services, 2008.
Warning: These citations may not always be complete (especially for serials).