Aritonang, I., Udayanti, E. and Iksan, N. 2018. Audit Keamanan Sistem Informasi Menggunakan Framework Cobit 5 (APO13). ITEJ (Information Technology Engineering Journals). 3, 2 (Dec. 2018), 6 - 10. DOI:https://doi.org/10.24235/itej.v3i2.27.