UKAJ, Fatos. Direct Marketing: An Imperative In Building Effective Comunication In Hospitality Enterprises. European Scientific Journal, ESJ, [S. l.], v. 12, n. 10, p. 240, 2016. DOI: 10.19044/esj.2016.v12n10p240. Disponível em: https://test.eujournal.org/index.php/esj/article/view/7324. Acesso em: 16 apr. 2025.