United Nations. Dept. of Social Affairs. (1949). Housing and town and country planning organization. s.n.
Chicago (17e ed.) BronvermeldingUnited Nations. Dept. of Social Affairs. Housing and Town and Country Planning Organization. Lake Success: s.n, 1949.
MLA (9e ed.) BronvermeldingUnited Nations. Dept. of Social Affairs. Housing and Town and Country Planning Organization. s.n, 1949.
Let op: Deze citaties zijn niet altijd 100% accuraat.