Não informado. (1922). Venereal Disease Information. U.S. Public Health Service, Venereal Disease Division.
Chicago-Zitierstil (17. Ausg.)Não informado. Venereal Disease Information. Washington: U.S. Public Health Service, Venereal Disease Division, 1922.
MLA-Zitierstil (8. Ausg.)Não informado. Venereal Disease Information. U.S. Public Health Service, Venereal Disease Division, 1922.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.