Não informado. (1949). The Vocational Aspect of Education. Colleges of Education Technical.
Chicagoスタイル(17版)引用形式Não informado. The Vocational Aspect of Education. London: Colleges of Education Technical, 1949.
MLA(8版)引用形式Não informado. The Vocational Aspect of Education. Colleges of Education Technical, 1949.
警告: この引用は必ずしも正確ではありません.