Amini A, Rosyidi S. THE IMPLEMENTATION OF ISLAMIC BUSINESS ETHICS IN THE UMRAH AND HAJJ TRAVEL COMPANY OF MUBINA TOUR INDONESIA GRESIK REGENCY. JESTT [Internet]. 2020 Dec. 26 [cited 2025 Jan. 28];7(12):2419-35. Available from: https://e-journal.unair.ac.id/JESTT/article/view/23692