Sitorus, Rudolf Hitler Satriawan, and George Frans Wanma. “The Validity of Electronic Signatures in Electronic Transactions From The Perspective of Regulation Number 71 of 2019”. Eduvest - Journal of Universal Studies 4, no. 3 (March 20, 2024): 871–879. Accessed July 1, 2025. https://eduvest.greenvest.co.id/index.php/edv/article/view/1081.