Matondang, A., Simanjuntak, A., Simanjuntak, M., & Simangunsong, J. (2024). ¬¬¬Design of search information system using mobile application for car problems in Deli Serdang regency. Jurnal Mandiri IT, 13(1), 170–177. https://doi.org/10.35335/mandiri.v13i1.326