Widyatni, D., P. T. Anugraha, Z. D. Fadillah, E. Juliar, and M. Taufik. “Traditional Public Transportation Service Levels of Middle City: A Systematic Literature Review : Tingkat Pelayanan Transportasi Umum Tradisional Di Kota Menengah: Tinjauan Literatur Sistematis”. RIGGS: Journal of Artificial Intelligence and Digital Business, vol. 4, no. 2, July 2025, pp. 5293-02, doi:10.31004/riggs.v4i2.1416.