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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Bulletin of the World Health Organization. Genèva, Switzerland: World Health Organization, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Bulletin of the World Health Organization. World Health Organization, 2012.
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