Essinger, J., & Wylie, H. (1999). The seven deadly skills of competing. London: International Thomson Business Press.
シカゴスタイル引用形Essinger, James., , Helen Wylie. The Seven Deadly Skills of Competing. London: International Thomson Business Press, 1999.
MLA引用形式Essinger, James., , Helen Wylie. The Seven Deadly Skills of Competing. London: International Thomson Business Press, 1999.
警告: この引用は必ずしも正確ではありません.