Não informado. (1961). Housing and planning references. Department of Housing and Urban Development.
Citação do estilo Chicago (17ª ed.)Não informado. Housing and Planning References. Washington: Department of Housing and Urban Development, 1961.
Citação MLA (8ª ed.)Não informado. Housing and Planning References. Department of Housing and Urban Development, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.