APA

Centers for Disease Control and Prevention (U.S.), . (2011). Syphilis: the facts. [Atlanta, Ga.]: Department of Health & Human Services, Centers for Disease Control and Prevention.

Chicago

Centers for Disease Control and Prevention (U.S.), . 2011. Syphilis: the facts. [Atlanta, Ga.]: Department of Health & Human Services, Centers for Disease Control and Prevention.

Harvard

Centers for Disease Control and Prevention (U.S.), . (2011). Syphilis: the facts. [Atlanta, Ga.]: Department of Health & Human Services, Centers for Disease Control and Prevention.

MLA

Centers for Disease Control and Prevention (U.S.), . Syphilis: the facts. [Atlanta, Ga.]: Department of Health & Human Services, Centers for Disease Control and Prevention. 2011.