PIOTROWSKI, Mariusz. Legal Nature of Public Fundrising. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 3, n. 7, p. s. 149–163, 2015. DOI: 10.18559/rkgtgm97. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3979. Acesso em: 3 sep. 2026.