Não informado. (1922). Venereal Disease Information. U.S. Public Health Service, Venereal Disease Division.
Citace podle Chicago (17th ed.)Não informado. Venereal Disease Information. Washington: U.S. Public Health Service, Venereal Disease Division, 1922.
Citace podle MLA (8th ed.)Não informado. Venereal Disease Information. U.S. Public Health Service, Venereal Disease Division, 1922.
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