PANKAJ AGARWAL, KAPIL AHALLAWAT, ADITYA HALIM PERDANA KUSUMA PUTRA. Role of Advertising Agencies in Marketing Effectiveness: An Exploratory Study. Journal of Informatics Education and Research, [S. l.], v. 3, n. 2, 2023. DOI: 10.52783/jier.v3i2.54. Disponível em: https://jier.org/index.php/journal/article/view/54. Acesso em: 2 apr. 2026.