APA (7th ed.) Zitazioa
UN-HABITAT. (2003). The challenge of slums: Global report on human settlements. Earthscan.
Chicago Style (17th ed.) Zitazioa
UN-HABITAT. The Challenge of Slums: Global Report on Human Settlements. London: Earthscan, 2003.
MLA (9th ed.) Zitazioa
UN-HABITAT. The Challenge of Slums: Global Report on Human Settlements. Earthscan, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.