Não informado. (1960). Bulletin of the Illinois Dental Hygienists Association. Illinois Dental Hygienists Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Bulletin of the Illinois Dental Hygienists Association. Chicago, Ill: Illinois Dental Hygienists Association, 1960.
MLA-Zitierstil (8. Ausg.)Não informado. Bulletin of the Illinois Dental Hygienists Association. Illinois Dental Hygienists Association, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.