Não informado. (1933). Northwest Dentistry. Minnesota State Dental Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Northwest Dentistry. Saint Paul, Minn: Minnesota State Dental Association, 1933.
MLA-Zitierstil (8. Ausg.)Não informado. Northwest Dentistry. Minnesota State Dental Association, 1933.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.