Chosen at random from all the resources listed:
- UML for Systems Engineering by Jon Holt
- The Systems Bible: The Beginner’s Guide to Systems Large and Small (3rd Edition) by John Gall
- Bionomics: Economy as Ecosystem by Michael Rothschild
- The Art of Systems Thinking: Essential Skills for Creativity and Problem Solving by Joseph O'Connor, Ian McDermott
- Soft Systems Methodology in Action by Jim Scholes, Peter B. Checkland