Nugraha, Mella, and Augie Manuputty. “SI/IT Strategic Planning Using Ward and Peppard Method on Secretariat of Salatiga City Regional People’s Representative Council”. Journal of Information Systems and Informatics 4, no. 2 (June 11, 2022): 416-427. Accessed December 19, 2025. https://journal-isi.org.adsii.or.id/index.php/isi/article/view/269.