1. Powershif: Knowledge, Wealth and Violence at the Edge of the 21st Century;Toffler,1990
2. Post-Capitalist Society;Drucker,1993
3. Intelligent Enterprise: A Knowledge and Service Based Paradigm for Industry;Quinn,1992
4. Your Company's Most Valuable Asset: Intellectual Capital;Stewart;Fortune,1994
5. Managing the Firm as Information Creation Process;Nonaka,1987