APA

Carroll D. D., Courtney-Long E. A., Stevens A. C., Sloan M. L., Lullo C., Visser S. N., Fox M. H., Armour B. S., Campbell V. A., Brown D. R. & Dorn J. M. (20140612). Vital signs: disability and physical activity--United States, 2009-2012. : MMWR. Morbidity and mortality weekly report.

Chicago

Carroll Dianna D, Courtney-Long Elizabeth A, Stevens Alissa C, Sloan Michelle L, Lullo Carolyn, Visser Susanna N, Fox Michael H, Armour Brian S, Campbell Vincent A, Brown David R and Dorn Joan M. 20140612. Vital signs: disability and physical activity--United States, 2009-2012. : MMWR. Morbidity and mortality weekly report.

Harvard

Carroll D. D., Courtney-Long E. A., Stevens A. C., Sloan M. L., Lullo C., Visser S. N., Fox M. H., Armour B. S., Campbell V. A., Brown D. R. and Dorn J. M. (20140612). Vital signs: disability and physical activity--United States, 2009-2012. : MMWR. Morbidity and mortality weekly report.

MLA

Carroll Dianna D, Courtney-Long Elizabeth A, Stevens Alissa C, Sloan Michelle L, Lullo Carolyn, Visser Susanna N, Fox Michael H, Armour Brian S, Campbell Vincent A, Brown David R and Dorn Joan M. Vital signs: disability and physical activity--United States, 2009-2012. : MMWR. Morbidity and mortality weekly report. 20140612.