Não informado. (1968). Bulletin of the Michigan Dental Hygienists Association. Michigan Dental Hygienists Association.
Citace podle Chicago (17th ed.)Não informado. Bulletin of the Michigan Dental Hygienists Association. Lansing, Mich: Michigan Dental Hygienists Association, 1968.
Citace podle MLA (8th ed.)Não informado. Bulletin of the Michigan Dental Hygienists Association. Michigan Dental Hygienists Association, 1968.
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