T. . O. Oyebisi, A. S. Momodu, in S. O. Olabode, „System Thinking in Managing Technological Innovation Systems in Manufacturing Companies“, OE, let. 59, št. 3-4, str. 50–57, avg. 2013, Pridobljeno: 12. januar 2026. [Na spletu]. Dostopno na: https://old.journals.um.si/index.php/oe/article/view/2307