Omurzakov А. . Main directions of using internet marketing tools for promotion of hotel services. Economic series of the Bulletin of L.N. Gumilyov ENU, [S. l.], n. 1, p. 139–146, 2023. Disponível em: https://bulecon.enu.kz/index.php/main/article/view/171. Acesso em: 3 feb. 2026.