Não informado. (1973). Environmental comment. Urban Land Institute, Research Division.
Chicagoスタイル(17版)引用形式Não informado. Environmental Comment. Washington: Urban Land Institute, Research Division, 1973.
MLA(8版)引用形式Não informado. Environmental Comment. Urban Land Institute, Research Division, 1973.
警告: この引用は必ずしも正確ではありません.