Não informado. (1961). Housing and planning references. Department of Housing and Urban Development.
Chicago (17e ed.) BronvermeldingNão informado. Housing and Planning References. Washington: Department of Housing and Urban Development, 1961.
MLA (8e ed.) BronvermeldingNão informado. Housing and Planning References. Department of Housing and Urban Development, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.