Basid, Puspa Miladin Nuraida Safitri A, Herman Tolle, and Fatwa Ramdani. 2017. “Designing Module E-Complaint System Based on Geotagging and Geofencing”. International Journal of Interactive Mobile Technologies (iJIM) 11 (3):pp. 113-129. https://doi.org/10.3991/ijim.v11i3.6557.