Nduru, Roni Syahputra, and Candra Mecca Sufyana. 2023. “Design of Web-Based Incoming and Outgoing Mail Information System at Diskominfo Kabupaten Tapanuli Tengah”. Jurnal Info Sains : Informatika Dan Sains 13 (02):129-36. https://ejournal.seaninstitute.or.id/index.php/InfoSains/article/view/2790.