Przybojewska, Ilona. “Environmental Principles. From Political Slogans to Legal Rules (2020) – a Review of the Monograph by Nicolas De Sadeleer”. The Opole Studies in Administration and Law 20, no. 2 (March 8, 2023): 105–127. Accessed September 28, 2024. https://czasopisma.uni.opole.pl/index.php/osap/article/view/4848.