Coffman, L. D. (1939). Freedom through education. University of Minnesota.
Chicagoスタイル(17版)引用形式Coffman, Lotus Delta. Freedom Through Education. Minneapolis: University of Minnesota, 1939.
MLA(8版)引用形式Coffman, Lotus Delta. Freedom Through Education. University of Minnesota, 1939.
警告: この引用は必ずしも正確ではありません.