Não informado. (1980). Compendium of Continuing Education in Dentistry. Dental Learning Systems.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Compendium of Continuing Education in Dentistry. Newtown, Pa: Dental Learning Systems, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Compendium of Continuing Education in Dentistry. Dental Learning Systems, 1980.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.