Chosen at random from all the resources listed:
- Systems: Concepts, Methodologies and Applications by Brian Wilson
- Methodology for Large Scale Systems by Andrew P. Sage
- Putting Systems to Work by Derek K. Hitchins
- When a Butterfly Sneezes: A Guide for Helping Kids Explore Interconnections in Our World ... by Linda Booth Sweeney
- Thinking in Systems: A Primer by Donella H Meadows