APA (7th ed.) Citation

Dreunan & Pennington. (1999). 12 ladders to world class performance: How your organization can compete with the best in the world. Kogan Page.

Chicago Style (17th ed.) Citation

Dreunan and Pennington. 12 Ladders to World Class Performance: How Your Organization Can Compete with the Best in the World. London: Kogan Page, 1999.

MLA (8th ed.) Citation

Dreunan and Pennington. 12 Ladders to World Class Performance: How Your Organization Can Compete with the Best in the World. Kogan Page, 1999.