World Health Organization. (1989). WORLD health organization: : publications catalogue 1948- 1989. World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. WORLD Health Organization: : Publications Catalogue 1948- 1989. World Health Organization, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld Health Organization. WORLD Health Organization: : Publications Catalogue 1948- 1989. World Health Organization, 1989.
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