Não informado. (1941). Medical Bulletin. Standard Oil Company and Affiliated Companies.
Chicago-Zitierstil (17. Ausg.)Não informado. Medical Bulletin. New York: Standard Oil Company and Affiliated Companies, 1941.
MLA-Zitierstil (8. Ausg.)Não informado. Medical Bulletin. Standard Oil Company and Affiliated Companies, 1941.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.