Abidin, T., M. Wiyugo, and D. Apriliani. “Implementasi Location Based Service Pada Aplikasi Pencarian Agen Travel Tegal”. Jurnal Komputer Terapan, vol. 3, no. 2, Nov. 2017, pp. 179-92, https://jurnal.pcr.ac.id/index.php/jkt/article/view/1528.