Yulianti, R. (2015). Pengolahan Surat Masuk Dan Surat Keluar Pada Mts Sholihiyyah Management Inbox and Outbox of MTs Sholihiyyah. Information Technology and Telematics, 5(2). Retrieved from https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/3466