Muharir, Muharir, Hoiriyah Hoiriyah, and Lilis Anggraini. “Aplikasi Surat Keterangan Permohonan Pendamping Ijazah ”. RJOCS (Riau Journal of Computer Science) 8, no. 01 (January 30, 2022): 11–20. Accessed May 4, 2024. https://journal.upp.ac.id/index.php/rjocs/article/view/1185.