Não informado. (1920). Archives of Dermatology and Syphilology. American Medical Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Archives of Dermatology and Syphilology. Chicago, Ill: American Medical Association, 1920.
MLA-Zitierstil (8. Ausg.)Não informado. Archives of Dermatology and Syphilology. American Medical Association, 1920.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.