NUR VITASARI, R., and Y. ANISTYASARI. “PENGEMBANGAN GAME STRATEGI PADA MATA PELAJARAN KEAMANAN JARINGAN”. IT-Edu : Jurnal Information Technology and Education, Vol. 3, no. 02, Jan. 2019, https://ejournal.unesa.ac.id/index.php/it-edu/article/view/26881.