O'Connor, J., & McDermott, I. (1997). The art of systems thinking: Essential skills for creativity and problem solving. Thorsons.
Παραπομπή σε μορφή Chicago (17η εκδ.)O'Connor, Joseph, και Ian McDermott. The Art of Systems Thinking: Essential Skills for Creativity and Problem Solving. London: Thorsons, 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)O'Connor, Joseph, και Ian McDermott. The Art of Systems Thinking: Essential Skills for Creativity and Problem Solving. Thorsons, 1997.
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