Parkyn, G. W. (1973). Towards a conceptual model of life-long education. Unesco.
Chicagoスタイル(17版)引用形式Parkyn, George W. Towards a Conceptual Model of Life-long Education. [Paris]: Unesco, 1973.
MLA(9版)引用形式Parkyn, George W. Towards a Conceptual Model of Life-long Education. Unesco, 1973.
警告: この引用は必ずしも正確ではありません.