Saragih, Reagan Surbakti, Iwan Purnama, and Dudes Manalu. 2023. “Tingkat Kepuasan Pelayanan Sales Di PT. Sutan Indo Aneka Mobil Menggunakan Metode Weighted Sum Model (WSM)”. Bulletin of Information Technology (BIT) 4 (1), 121 -29. https://doi.org/10.47065/bit.v4i1.523.