Não informado. (1981). International Journal of Periodontics and Restorative Dentistry. Quintessence Publishing.
Cita Chicago Style (17a ed.)Não informado. International Journal of Periodontics and Restorative Dentistry. Chicago, Ill: Quintessence Publishing, 1981.
Cita MLA (8a ed.)Não informado. International Journal of Periodontics and Restorative Dentistry. Quintessence Publishing, 1981.
Precaución: Estas citas no son 100% exactas.