Não informado. (1974). Race and class. Institute of Race Relations.
Chicagoスタイル(17版)引用形式Não informado. Race and Class. London: Institute of Race Relations, 1974.
MLA(8版)引用形式Não informado. Race and Class. Institute of Race Relations, 1974.
警告: この引用は必ずしも正確ではありません.