APA

United States, . (2014). The health consequences of smoking--50 years of progress: a report of the Surgeon General : executive summary. Rockville, MD: U.S. Department of Health and Human Services, Public Health Service, Office of the Surgeon General.

Chicago

United States, . 2014. The health consequences of smoking--50 years of progress: a report of the Surgeon General : executive summary. Rockville, MD: U.S. Department of Health and Human Services, Public Health Service, Office of the Surgeon General.

Harvard

United States, . (2014). The health consequences of smoking--50 years of progress: a report of the Surgeon General : executive summary. Rockville, MD: U.S. Department of Health and Human Services, Public Health Service, Office of the Surgeon General.

MLA

United States, . The health consequences of smoking--50 years of progress: a report of the Surgeon General : executive summary. Rockville, MD: U.S. Department of Health and Human Services, Public Health Service, Office of the Surgeon General. 2014.