APA-viite (7. p.)
ProQuest (Firm). (2011). Environmental impacts of international shipping: The role of ports. OECD.
Chicago-viite (17. p.)
ProQuest (Firm). Environmental Impacts of International Shipping: The Role of Ports. Paris: OECD, 2011.
MLA-viite (9. p.)
ProQuest (Firm). Environmental Impacts of International Shipping: The Role of Ports. OECD, 2011.
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