Powell, L. S. (1969). Communication and learning. Pitman.
Chicagoスタイル(17版)引用形式Powell, Leonard Sutherland. Communication and Learning. London: Pitman, 1969.
MLA(8版)引用形式Powell, Leonard Sutherland. Communication and Learning. Pitman, 1969.
警告: この引用は必ずしも正確ではありません.