Soesanto, Danti Ardianti, and Valeriana Lukitosari. 2026. “Improving The Order Pickup Process in Warehouses by Instant Couriers Through Zone-Based Assignment”. Journal of Mathematics Instruction, Social Research and Opinion 5 (2). Bandung, Indonesia:1341–1356. https://doi.org/10.58421/misro.v5i2.1032.