Ikasari, Indri, Donna Setiawati, and Dwi Kristiani. 2020. “Aplikasi Managemen Surat Berbasis WEB Pada SMK Negeri 1 Boyolali”. JITU : Journal Informatic Technology And Communication 4 (1):10-16. https://ejournal.uby.ac.id/index.php/jitu/article/view/266.