Chosen at random from all the resources listed:
- Systems Thinking, Systems Practice by Peter B. Checkland
- Advanced Systems Thinking, Engineering, and Management by Derek K. Hitchins
- The “Thinking” in Systems Thinking: Seven Essential Skills by Barry Richmond
- When a Butterfly Sneezes: A Guide for Helping Kids Explore Interconnections in Our World ... by Linda Booth Sweeney
- The Fifth Discipline Fieldbook : Strategies and Tools for Building a Learning Organization by Bryan J. Smith, Peter M. Senge, Richard B. Ross, Charlotte Roberts, Art Kleiner