Schamschula, R. G. (1978). WHO study of dental caries etiology in Papua New Guinea. World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchamschula, R. G. WHO Study of Dental Caries Etiology in Papua New Guinea. Geneva: World Health Organization, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSchamschula, R. G. WHO Study of Dental Caries Etiology in Papua New Guinea. World Health Organization, 1978.
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