World Health Organization. (2011). Handbook for inspection of ships and issuance of ship sanitation certificates. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Handbook for Inspection of Ships and Issuance of Ship Sanitation Certificates. Geneva, Switzerland: World Health Organization, 2011.
MLA-viite (8. p.)World Health Organization. Handbook for Inspection of Ships and Issuance of Ship Sanitation Certificates. World Health Organization, 2011.
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