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 2, no. 3 (December 28, 2025): 185–197. Accessed October 14, 2026. http://journal.an-nur.ac.id/index.php/jes/article/view/4887.