RANCANG BANGUN SISTEM LAYANAN ADMINISTRASI PERSURATAN SMKN 4 GORONTALO BERDASARKAN FRAMEWORK ITIL V3 DOMAIN SERVICE DESIGN. JT [Internet]. 2026 Jun. 21 [cited 2026 Jun. 26];22(1). Available from: https://www.ejournal.stmikbipa.me/index.php/JT/article/view/504