Não informado. (1922). Venereal Disease Information. U.S. Public Health Service, Venereal Disease Division.
Chicago-referens (17:e uppl.)Não informado. Venereal Disease Information. Washington: U.S. Public Health Service, Venereal Disease Division, 1922.
MLA-referens (8:e uppl.)Não informado. Venereal Disease Information. U.S. Public Health Service, Venereal Disease Division, 1922.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.