Ali, S., M. Sobirin, and R. Agustin. “Analysis of Factors That Cause Accidents in The Construction of 6 Inner City Toll”. IJTI International Journal of Transportation and Infrastructure EISSN 2597-4769 PISSN 2597-4734, Vol. 5, no. 01, Oct. 2021, pp. 12-13, doi:10.29138/ijti.v5i01.1502.