Hopkins, M. F. S. (1968). Learning through the environment. Longmans.
Chicagoスタイル(17版)引用形式Hopkins, Muriel F. S. Learning Through the Environment. London: Longmans, 1968.
MLA(9版)引用形式Hopkins, Muriel F. S. Learning Through the Environment. Longmans, 1968.
警告: この引用は必ずしも正確ではありません.