Mubarok N. MENINGKATKAN PEMAHAMAN KONSEP FUNGSI MATA KULIAH MATEMATIKA EKONOMI MELALUI PERMAINAN KRIPTOGRAFI (CRYPTOGAME). JEP [Internet]. 2020 Aug. 13 [cited 2025 May 13];16(2):49-60. Available from: https://journal.uny.ac.id/index.php/jep/article/view/25381