United Nations. Statistical Division & United Nations Environment Programme. Economics and Trade Unit Division of Technology, Industry and Economics. (2000). Integrated environmental and economic accounting: An operational manual. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations. Statistical Division και Industry and Economics United Nations Environment Programme. Economics and Trade Unit Division of Technology. Integrated Environmental and Economic Accounting: An Operational Manual. New York: United Nations, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)United Nations. Statistical Division και Industry and Economics United Nations Environment Programme. Economics and Trade Unit Division of Technology. Integrated Environmental and Economic Accounting: An Operational Manual. United Nations, 2000.