Não informado. (1941). Medical Bulletin. Standard Oil Company and Affiliated Companies.
Cita Chicago Style (17a ed.)Não informado. Medical Bulletin. New York: Standard Oil Company and Affiliated Companies, 1941.
Cita MLA (8a ed.)Não informado. Medical Bulletin. Standard Oil Company and Affiliated Companies, 1941.
Precaución: Estas citas no son 100% exactas.