Chojnacka, Ewa. “One Percent of Personal Income Tax As a Source of Revenue in Public Benefit Organisations”. Ekonomia i Prawo. Economics and Law 19, no. 3 (September 30, 2020): 449–465. Accessed July 16, 2024. https://apcz.umk.pl/EiP/article/view/EiP.2020.030.