World Health Organization. (2011). Handbook for inspection of ships and issuance of ship sanitation certificates. World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Handbook for Inspection of Ships and Issuance of Ship Sanitation Certificates. Geneva, Switzerland: World Health Organization, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Handbook for Inspection of Ships and Issuance of Ship Sanitation Certificates. World Health Organization, 2011.
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