Murmanto, Imanuel, and Dina Murad. “Computerizing Values and Accessing Values via SMS”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi 10, no. 2 (January 16, 2020): 76-81. Accessed April 27, 2024. https://ejournals.umn.ac.id/index.php/SI/article/view/1163.