Oral hygiene. Robert C. Ketterer [etc.].
Lua i Stíl Chicago (17ú heag.)Oral Hygiene. Pittsburgh, Pa. [etc.]: Robert C. Ketterer [etc.].
Lua MLA (8ú heag.)Oral Hygiene. Robert C. Ketterer [etc.].
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.