Não informado. (1974). Special Education. National Council for Special Education.
Chicagoスタイル(17版)引用形式Não informado. Special Education. London: National Council for Special Education, 1974.
MLA(8版)引用形式Não informado. Special Education. National Council for Special Education, 1974.
警告: この引用は必ずしも正確ではありません.