ERIN NUR PUTRIANI; ROBIATUL ADAWIYAH. Marketing Strategy Of Umrah Pilgrimage Travel Organizer (PPIU) PT. Nur Haramain Mulia Towards Competitive Advantage. HARAMAIN: Jurnal Manajemen Bisnis, [S. l.], v. 5, n. 01, p. 01–09, 2025. DOI: 10.66931/jmb-166. Disponível em: https://e-journal.ibama.ac.id/index.php/jmb/article/view/166. Acesso em: 8 sep. 2026.