Ferrell, R. W. (1972). Managing opportunity. American Management Association.
シカゴスタイル引用形Ferrell, Robert W. Managing Opportunity. U.S.A: American Management Association, 1972.
MLA引用形式Ferrell, Robert W. Managing Opportunity. American Management Association, 1972.
警告: この引用は必ずしも正確ではありません.