Evi, Elin Sudiarti, and Samuel Dharma Putra Nainggolan. “Daya Mengikat Perjanjian Tertulis Tanpa Menggunakan Materai”. Halu Oleo Law Review 7, no. 1 (March 26, 2023): 66–84. Accessed July 4, 2024. https://holrev.uho.ac.id/index.php/journal/article/view/14.