Szymański, Waldemar. “The Budgetary, Social, and Economic Importance of Tax on Goods and Services in Poland”. Studia Prawno-Ekonomiczne 113 (December 30, 2019): 341–368. Accessed May 3, 2024. https://czasopisma.ltn.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/744.