1. 1982. Personal communication.
2. 1971. The Concept of Corporate Strategy. p. 33.
3. 1997. The Innovator's Dilemma: When New Technologies Cause Great Firms to Fail. Harvard Business School Press: Boston.
4. , . 2004. Rapid Fire Fulfillment, Harvard Business Review, November.
5. 2005. Strategy and the Business Landscape. New Jersey: Englewood Cliffs, Chapter 5.