DERESZ, A.; PODSTAWKA, M. INCOME TAX IMPOSED ON INDIVIDUAL TAXPAYERS PROGRESSIVE OR LINEAR? –ON THE EXAMPLE OF SIEDLCE AND THE SIEDLCE POVIAT. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 7, n. 3, p. 13–23, 2008. Disponível em: https://aspe.sggw.edu.pl/article/view/823. Acesso em: 5 may. 2024.