Szyja, Paulina. “The Role of the Concept of Sustainable Development and Its Indicators in a Study on the Progress of the New UN Goals”. Economic and Environmental Studies 18, no. 1 (45) (November 20, 2020): 387–409. Accessed November 2, 2024. https://czasopisma.uni.opole.pl/index.php/ees/article/view/2620.