Lewis, W. (1969). Principles of Economic Planning (3rd Ed.). George Allen & Unwin.
シカゴスタイル引用形Lewis, W.Arthur. Principles of Economic Planning. 3rd Ed. Bombay: George Allen & Unwin, 1969.
MLA引用形式Lewis, W.Arthur. Principles of Economic Planning. 3rd Ed. George Allen & Unwin, 1969.
警告: この引用は必ずしも正確ではありません.