Não informado. (1981). International Journal of Periodontics and Restorative Dentistry. Quintessence Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. International Journal of Periodontics and Restorative Dentistry. Chicago, Ill: Quintessence Publishing, 1981.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. International Journal of Periodontics and Restorative Dentistry. Quintessence Publishing, 1981.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.