Manullang, O. R., Ratnasari, A. dan Sitorus, P. A. (2020) “Spatial and Non-Spatial Analysis of Users and Online Transportation Service Providers in the Tembalang Higher Education Area, Semarang City”, Indonesian Journal of Development Studies, 1(1), hlm. 16–25. doi: 10.12962/j29649714.v1i1.7901.