BARTOSIK-PURGAT, Małgorzata. Polish exporters’ use and perception of various sources of market information. Economics and Business Review, Poland, v. 14, n. 2, p. 97–117, 2014. DOI: 10.18559/ebr.2014.2.631. Disponível em: https://journals.ue.poznan.pl/ebr/article/view/631. Acesso em: 3 apr. 2025.