Não informado. (1981). International Journal of Periodontics and Restorative Dentistry. Quintessence Publishing.
Citace podle Chicago (17th ed.)Não informado. International Journal of Periodontics and Restorative Dentistry. Chicago, Ill: Quintessence Publishing, 1981.
Citace podle MLA (8th ed.)Não informado. International Journal of Periodontics and Restorative Dentistry. Quintessence Publishing, 1981.
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