wijayanto, aditya, & Wibowo, F. (2019). PENERAPAN EMERGENCY SYSTEM BERBASIS MOBILE (STUDY KASUS INSTITUT TEKNOLOGI TELKOM PURWOKERTO). Journal of Informatics Information System Software Engineering and Applications (INISTA), 1(2), 1-8. https://doi.org/10.20895/inista.v1i2.29