Prayoga, Mohamad Adjie, et al. “UTILIZATION OF QGIS CLOUD FOR MAPPING ACCIDENT-PRONE AREAS IN CIREBON CITY”. CENTRAL ASIA AND THE CAUCASUS, vol. 23, no. 1, Jan. 2022, pp. 4770-8, http://13.200.237.241/CAC/index.php/cac/article/view/471.