A. Ul Husna, M. A. Ilyas, S. R. Nurfadilah, B. Rizky, and O. Agustiawan, “Digital Marketing Transformation in Hajj and Umrah Agencies: A Systematic Literature Review”, Indones. J. Da’wah. Manag. Scholars., vol. 1, no. 02, pp. 82–87, Dec. 2025.