Marpaung, Haezer Josuo Tio, and Aurora Jillena Meliala. 2025. “Optimizing the Supervisory Role of the Consumer Dispute Settlement Agency in E-Commerce Transactions Concerning Consumer Losses”. Journal of Mathematics Instruction, Social Research and Opinion 4 (4). Bandung, Indonesia:1405-20. https://doi.org/10.58421/misro.v4i4.893.