American Education Fellowship. (1939). Progressive education booklet. American Education Press.
Chicagoスタイル(17版)引用形式American Education Fellowship. Progressive Education Booklet. Columbus, Ohio: American Education Press, 1939.
MLA(8版)引用形式American Education Fellowship. Progressive Education Booklet. American Education Press, 1939.
警告: この引用は必ずしも正確ではありません.