SZYMONIUK, Barbara; VALTARI, Heidi. The REKO System in Finland: a New Model of a Sustainable Marketing Channel. Problemy Ekorozwoju, [S. l.], v. 13, n. 2, p. 103–111, 2018. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/5018. Acesso em: 4 dec. 2024.