Ramadhina NR, Widyatmojo G. ANALYSIS OF THE INFORMATION SYSTEM FOR THE MANAGEMENT OF INCOMING AND OUTGOING LETTERS AT SMK YPE NUSANTARA SLAWI. media j. inform. [Internet]. 2025 Dec. 18 [cited 2026 Apr. 16];17(1a). Available from: https://jurnal.unsur.ac.id/index.php/mjinformatika/article/view/5505