Drennan, D., & Pennington, S. (1999). 12 ladders to world class performance: How your organization can compete with the best in the world. Kogan Page.
芝加哥风格引文Drennan, David, 与 Stewart Pennington. 12 Ladders to World Class Performance: How Your Organization Can Compete with the Best in the World. London: Kogan Page, 1999.
MLA引文Drennan, David, 与 Stewart Pennington. 12 Ladders to World Class Performance: How Your Organization Can Compete with the Best in the World. Kogan Page, 1999.
警告：这些引文格式不一定是100％准确.