Haines, Stephen. “Systems Thinking Research Rediscovered: Ludwig Von Bertalanffy and the Society for General System’s Research’s Relevance in the 21st Century”. Proceedings of the 54th Annual Meeting of the ISSS - 2010, Waterloo, Canada 54, no. 1 (July 16, 2010). Accessed September 28, 2021. https://journals.isss.org/index.php/proceedings54th/article/view/1366.