Não informado. (1960). Bulletin of the Illinois Dental Hygienists Association. Illinois Dental Hygienists Association.
Chicago-viite (17. p.)Não informado. Bulletin of the Illinois Dental Hygienists Association. Chicago, Ill: Illinois Dental Hygienists Association, 1960.
MLA-viite (8. p.)Não informado. Bulletin of the Illinois Dental Hygienists Association. Illinois Dental Hygienists Association, 1960.
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