Sources
• Introduction to Systems Theory by Niklas Luhmann, edited by Dirk Baecker, and translated by Peter Gilgen; published by Polity Press, 2013; ISBN: 978-0-7456-4571-1; Link: www.politybooks.com[1],[2],[3]. • Organization and Decision by Niklas Luhmann, translated by Rhodes Barrett; published by Cambridge University Press, 2018; ISBN: 978-1-108-47207-4; DOI: 10.1017/9781108560672; Link: www.cambridge.org[4],[5],[6]. • Social Systems by Niklas Luhmann, translated by John Bednarz, Jr. with Dirk Baecker; published by Stanford University Press, 1995; ISBN: 0-8047-1993-4[7],[8].