Não informado. (1970). Advances in periodontics. American Dental Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Advances in Periodontics. Chicago, Ill: American Dental Association, 1970.
Lua MLA (8ú heag.)Não informado. Advances in Periodontics. American Dental Association, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.