Salem, A. “NIKLAS LUHMANN, OBSERVING SYSTEMS AND SOCIAL CRITIQUE”. Sociologija. Mintis ir veiksmas 34, no. 1 (January 1, 2015): 17–34. Accessed April 28, 2024. https://www.journals.vu.lt/sociologija-mintis-ir-veiksmas/article/view/7458.