Putri, Mayang Anglingsari, Ismiarta Aknuranda, and Wayan Firdaus Mahmudy. 2017. “Maturity Evaluation of Information Technology Governance in PT DEF Using Cobit 5 Framework”. Journal of Information Technology and Computer Science 2 (1):19-27. https://doi.org/10.25126/jitecs.20172123.