Łazutka , Paulina. “Cooperation of Spa Municipalities in the Form of a Joint Authority As an Instance of Variety of Forms of Performing Tasks in the Area of Public Administration”. The Opole Studies in Administration and Law 16, no. 1 (1) (May 31, 2019): 119–126. Accessed November 2, 2024. https://czasopisma.uni.opole.pl/index.php/osap/article/view/210.