“DEVELOPMENT OF INFORMATION SYSTEM E-ARCHIVES OF INCOMING AND OUTCOMING LETTERS (PT. SUMBER KALIMANTAN ABADI – SIDOARJO)”. 2024. Antivirus : Jurnal Ilmiah Teknik Informatika 18 (2): 266-79. https://doi.org/10.35457/antivirus.v18i2.3580.