RUTH MUTIARA SARI11.01.53.0011. 2015. “APLIKASI PERINGATAN DINI DAERAH RAWAN BANJIR DIWILAYAH KOTA SEMARANG BERBASIS ANDROID Ruth Mutiara Sari”. Information Technology and Telematics 5 (2). https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/3435.