Chosen at random from all the resources listed:
- The Systems Bible: The Beginner’s Guide to Systems Large and Small (3rd Edition) by John Gall
- System Requirements Analysis by Jeffrey O Grady
- The “Thinking” in Systems Thinking: Seven Essential Skills by Barry Richmond
- Military Electronic Systems Engineering MSc/PgDip by -- Uknown -- -- Uknown --
- Rethinking the Fifth Discipline by Robert L. Flood