XU, Jing; LI, Jianjun. Tax Payment, Social Contribution for Pollution Prevention and Happiness. Problemy Ekorozwoju, [S. l.], v. 11, n. 1, p. 59–64, 2016. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4960. Acesso em: 22 jul. 2024.