1. Systems Thinking, Systems Practice;Checkland,1993
2. Systems Thinking: Creative Holism for Managers;Jackson,2003
3. Merging the World Views of Systems Science and Human Values;Hall,1995
4. Five Case Studies Applying Soft Systems Methodology to Knowledge Management;Maqsood,2001
5. Basic Principles of SSM Modeling: An Examination of CATWOE from a Soft Perspective