Cita APA

Keller, P. A., Feltracco, A., Bailey, L. A., Li, Z., Niederdeppe, J., Baker, T. B., & Fiore, M. C. (2010). Changes in Tobacco Quitlines in the United States, 2005-2006. Centers for Disease Control and Prevention.

Chicago Style Citation

Keller, Paula A., Annamaria Feltracco, Linda A. Bailey, Zhanhai Li, Jeff Niederdeppe, Timothy B. Baker, i Michael C. Fiore. Changes in Tobacco Quitlines in the United States, 2005-2006. Centers for Disease Control and Prevention, 2010.

Cita MLA

Keller, Paula A., et al. Changes in Tobacco Quitlines in the United States, 2005-2006. Centers for Disease Control and Prevention, 2010.