Kurniawan, Agus. “DIGITAL RIGHTS MANAGEMENT SEBAGAI SOLUSI KEAMANAN DOKUMEN ELEKTRONIK”. Jurnal Sistem Informasi 4, no. 2 (July 12, 2012): 93–99. Accessed March 21, 2026. https://jsi.cs.ui.ac.id/index.php/jsi/article/view/251.