United Nations. Dept. of Social Affairs. (1949). Housing and town and country planning organization. s.n.
芝加哥风格引文United Nations. Dept. of Social Affairs. Housing and Town and Country Planning Organization. Lake Success: s.n, 1949.
MLA引文United Nations. Dept. of Social Affairs. Housing and Town and Country Planning Organization. s.n, 1949.
警告：这些引文格式不一定是100％准确.