(1987). Oral health surveys.
Lua i Stíl Chicago (17ú heag.)Oral Health Surveys. 1987.
Lua MLA (9ú heag.)Oral Health Surveys. 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)