DZIAWGO, D. Loyalty program for investors as tool for maintaining relations with shareholders. Ekonomia i Prawo. Economics and Law, [S. l.], v. 19, n. 3, p. 479–491, 2020. DOI: 10.12775/EiP.2020.032. Disponível em: https://apcz.umk.pl/EiP/article/view/EiP.2020.032. Acesso em: 28 mar. 2024.