(1993). The maintenance of infrastructure and its financing and cost recovery. United Nations Centre for Human Settlement.
芝加哥风格引文The Maintenance of Infrastructure and Its Financing and Cost Recovery. Nairobi: United Nations Centre for Human Settlement, 1993.
MLA引文The Maintenance of Infrastructure and Its Financing and Cost Recovery. United Nations Centre for Human Settlement, 1993.
警告：这些引文格式不一定是100％准确.