[1]
Zahra, N.A.I. et al. 2025. Strategic Planning and Product Portfolio Development at Umrah Al Hijrah Travel Agents in the Era Digital Competition in the Surabaya Area. Journal of Business and Halal Industry. 2, 4 (Jun. 2025), 10. DOI:https://doi.org/10.47134/jbhi.v2i4.777.