Copeland, M. T. (1957). Executive at work. Has vald university press.
シカゴスタイル引用形Copeland, Melvin T. Executive at Work. Cambridge: Has vald university press, 1957.
MLA引用形式Copeland, Melvin T. Executive at Work. Has vald university press, 1957.
警告: この引用は必ずしも正確ではありません.