Aresta, R. M., Pratomo, E. W., Geraldino, V., Santoso, J. D., & Mulyatun, S. (2020). IMPLEMENTASI MULTI ENKRIPSI ROT 13 PADA SYMBOL WHATSAPP. Journal of Information System Management (JOISM), 2(1), 1-5. https://doi.org/10.24076/joism.2020v2i1.158