Harahap, Charles Ronald. “Perancangan Robot Pemadam Api Gedung Bertingkat Berbasis Mikrokontroler ATMega8535”. Electrician : Jurnal Rekayasa dan Teknologi Elektro 3, no. 2 (April 9, 2012): 109-118. Accessed June 8, 2025. https://electrician.unila.ac.id/index.php/ojs/article/view/ele-200905-03-02-04.