NYKIEL, Włodzimierz; SĘK, Małgorzata. The Charter of Taxpayer’s Rights: A new instrument to protect the rights of the Polish taxpayer. Poland: Lodz University Press,2022. DOI: 10.18778/8220-833-7. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1183. Acesso em: 28 jan. 2026.