APRIYANTO NUGROHO. Upaya Kelompok Bimbingan Ibadah Haji dan Umroh (KBIHU) dalam Meningkatkan Customer Relationship Management Haji dan Umroh (Studi Kasus di KBIHU Assalam Lahat). ATTAMYIS: Jurnal Ekonomi Syariah, [S. l.], v. 2, n. 3, p. 185–197, 2025. Disponível em: http://journal.an-nur.ac.id/index.php/jes/article/view/4887. Acesso em: 14 oct. 2026.