Suharyanto, Indra, and Sendy Heryanto. “OPTIMALISASI SIMPANG RING ROAD UTARA – JALAN KALIURANG, SLEMAN, DI. YOGYAKARTA”. CivETech, vol. 1, no. 2, Aug. 2019, pp. 17-27, doi:10.47200/civetech.v1i2.865.