APA
(1961). Syphilis. Washington, D.C: U.S. Dept. of Health, Education and Welfare.
Chicago
1961. Syphilis. Washington, D.C: U.S. Dept. of Health, Education and Welfare.
Harvard
(1961). Syphilis. Washington, D.C: U.S. Dept. of Health, Education and Welfare.
MLA
Syphilis. Washington, D.C: U.S. Dept. of Health, Education and Welfare. 1961.