Yudhi Widyo Armono, Yudhi Widyo Armono, and Andika Teo Setyawan. “PERANAN MATERAI DALAM KEABSAHAN PERJANJIAN”. Justicia Journal 10, no. 1 (March 26, 2021): 62–70. Accessed May 18, 2026. https://ejournal.undar.or.id/index.php/Justicia/article/view/84.