REKETTYE, Gábor. Zeller Gyula (1928 - 2009). Marketing & Menedzsment, [S. l.], v. 43, n. 3, p. 80, 2019. Disponível em: https://journals-test.lib.pte.hu/index.php/mm/article/view/676. Acesso em: 7 júl. 2024.