1. Arie de Geus, The Living Company. Boston: Harvard Business School Press, 1997, p. 74.
2. Edgar H. Schein, The Corporate Culture Survival Guide: Sense and Nonsense About Culture Change. San Francisco: Jossey-Bass, 1999, pp. 120–1.
3. James F. Bolt, Executive Development: A Strategy for Corporate Competitiveness. Rancho Sante Fe, 1997 (1st edn 1989), p. 197, emphasis in the original.
4. Joseph A. Raelin, Work-Based Learning: The New Frontier of Management Development. Upper Saddle, New Jersey: Prentice Hall, 2000.