World Health Organization. (1991). Research abstracts: South-East Asia region. WHO.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Research Abstracts: South-East Asia Region. New Delhi: WHO, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Research Abstracts: South-East Asia Region. WHO, 1991.
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