Cropley, A. J. (1979). Lifelong education, a stocktaking. Unesco Institute for Education.
Chicagoスタイル(17版)引用形式Cropley, A. J. Lifelong Education, a Stocktaking. Hamburg: Unesco Institute for Education, 1979.
MLA(8版)引用形式Cropley, A. J. Lifelong Education, a Stocktaking. Unesco Institute for Education, 1979.
警告: この引用は必ずしも正確ではありません.