Martias, A. ., A. I. . Harsapranata, A. R. . Ruli, R. . Wiyanti, and R. . Novari. “The Role of Internal Auditors in Control Self Assessment in the Material Planning Field of Automotive Company PT. Alkha”. Nusantara Science and Technology Proceedings, vol. 2022, no. 25, July 2022, pp. 133-40, doi:10.11594/nstp.2022.2519.