HUSSIEN, S. A. The role of marketing information systems in achieving competitive advantage: A study of the opinions of a sample of employees in a number of hotels in Duhok. Academic Journal of Nawroz University, [S. l.], v. 9, n. 3, p. 332–348, 2020. DOI: 10.25007/ajnu.v9n3a840. Disponível em: https://journals.nawroz.edu.krd/index.php/ajnu/article/view/840. Acesso em: 23 jul. 2024.