Pontoan, M., J. SIhotang, and E. Lompoliu. “Information Security Analysis of Online Education Management System Using Information Technology Infrastructure Library Version 3”. MATRIK : Jurnal Manajemen, Teknik Informatika Dan Rekayasa Komputer, Vol. 22, no. 2, Mar. 2023, pp. 207-16, doi:https://doi.org/10.30812/matrik.v22i2.2474.