Kevin, Kevin, and Fahraini Bacharuddin. “Sistem Peringatan Sisa Pulsa Pada KWH Meter Digital Prabayar”. TESLA: Jurnal Teknik Elektro 19, no. 1 (May 10, 2017): 68–80. Accessed May 5, 2024. https://journal.untar.ac.id/index.php/tesla/article/view/312.