Santi, Dessy, and Meri Kristina Tongkuru. “Sistem Informasi Pengarsipan Surat-Surat Pada PT Sinergi Perkebunan Nusantara”. Jurnal Ilmiah Intech : Information Technology Journal of UMUS 2, no. 01 (May 29, 2020): 51~60. Accessed September 22, 2025. https://jurnal.umus.ac.id/index.php/intech/article/view/186.