Somantri, Oman, Rosid Mustofa, and Mukhamad Faujan. 2018. “PENERAPAN LOCATION BASED SERVICE UNTUK OPTIMASI SISTEM INFORMASI GEOGRAFIS PONDOK PESANTREN WILAYAH TEGAL”. CESS (Journal of Computer Engineering, System and Science) 3 (2):106-10. https://doi.org/10.24114/cess.v3i2.9969.