Não informado. (1921). Sanitation supplements of the tropical diseases bulletin. Bureau of Hygiene and Tropical Diseases.
Cita Chicago Style (17a ed.)Não informado. Sanitation Supplements of the Tropical Diseases Bulletin. London: Bureau of Hygiene and Tropical Diseases, 1921.
Cita MLA (8a ed.)Não informado. Sanitation Supplements of the Tropical Diseases Bulletin. Bureau of Hygiene and Tropical Diseases, 1921.
Precaución: Estas citas no son 100% exactas.