Não informado. (1967). Parodontologie and academy review. California Academy of Periodontology.
Lua i Stíl Chicago (17ú heag.)Não informado. Parodontologie and Academy Review. Zurich, Suíça: California Academy of Periodontology, 1967.
Lua MLA (8ú heag.)Não informado. Parodontologie and Academy Review. California Academy of Periodontology, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.