YUSNITA EFFENDY, M. Pengaruh Customer Relationship Management Terhadap Loyalitas Jamaah Umroh pada PT Cahaya Berkah Safar: Al-Ghazi Tour & Travel. El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam, [S. l.], v. 5, n. 7, p. 3624–3635, 2024. DOI: 10.47467/elmal.v5i7.3593. Disponível em: https://journal-laaroiba.com/ojs/index.php/elmal/article/view/3593. Acesso em: 11 may. 2026.