Department of International Economic and Social Affairs Statistical Office. (1988). Concepts and methods of environmental statistics human settlements statements: A technical report. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Department of International Economic and Social Affairs Statistical Office. Concepts and Methods of Environmental Statistics Human Settlements Statements: A Technical Report. New York: United Nations, 1988.
Παραπομπή σε μορφή MLA (9th εκδ.)Department of International Economic and Social Affairs Statistical Office. Concepts and Methods of Environmental Statistics Human Settlements Statements: A Technical Report. United Nations, 1988.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.