Hari Sanjaya. “Legal Certainty for E-Commerce Transactions As an Effort to Increase Potential State Revenue in the Taxation Sector ”. ISNU Nine-Star Multidisciplinary Journal 1, no. 2 (September 30, 2024): 99–105. Accessed September 12, 2025. https://journal.isnu-sumut.org/index.php/ins9mj/article/view/106.