CIUMAN, Krystyna. Tax Relief and Tax Preferences in Income Tax in Poland. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, Krakow, n. 2(974), p. 167–183, 2018. DOI: 10.15678/ZNUEK.2018.0974.0210. Disponível em: https://psychologia-ekonomiczna.uek.krakow.pl/index.php/krem/article/view/1587.. Acesso em: 20 sep. 2024.