Pankaj Agarwal, Kapil Ahallawat, Aditya Halim Perdana Kusuma Putra 2023. Role of Advertising Agencies in Marketing Effectiveness: An Exploratory Study. Journal of Informatics Education and Research. 3, 2 (Apr. 2023). DOI:https://doi.org/10.52783/jier.v3i2.54.