LD, Kamilina Rhodiyah, and Fatin Fadhillah Hasib. “Penerapan Promotional Mix Pada Biro Perjalanan Umroh/ Haji Shafira Tour And Travel Surabaya Menurut Perspektif Islam”. Jurnal Ekonomi Syariah Teori dan Terapan 3, no. 1 (January 19, 2017): 1–15. Accessed January 18, 2025. https://e-journal.unair.ac.id/JESTT/article/view/3324.