Sugiyanto. “KEKUATAN PEMBUKTIAN TANDA TANGAN ELEKTRONIK DALAM KONTRAK BISNIS”. Jurnal De Jure Muhammadiyah Cirebon 8, no. 1 (June 24, 2024): 119–127. Accessed March 13, 2025. https://e-journal.umc.ac.id/index.php/JDJ/article/view/6022.