Purnama, Dian Elvana, Agustinus Fritz Wijaya, and Ariya Dwika Cahyono. “Performance Analysis Of Information System Information Technology Using COBIT 4.1”. Journal of Information Systems and Informatics 2, no. 1 (March 11, 2020): 105–113. Accessed March 7, 2026. https://www.journal-isi.org/index.php/isi/article/view/48.