Erin Nur Putriani, and Robiatul Adawiyah. “Marketing Strategy Of Umrah Pilgrimage Travel Organizer (PPIU) PT. Nur Haramain Mulia Towards Competitive Advantage”. HARAMAIN: Jurnal Manajemen Bisnis 5, no. 01 (January 10, 2025): 01–09. Accessed September 7, 2026. https://e-journal.ibama.ac.id/index.php/jmb/article/view/166.