Redho Maland Aresta, Ero Wahyu Pratomo, Vicky Geraldino, Joko Dwi Santoso, and Sri Mulyatun. “IMPLEMENTASI MULTI ENKRIPSI ROT 13 PADA SYMBOL WHATSAPP”. JOURNAL OF INFORMATION SYSTEM MANAGEMENT 2, no. 1 (July 4, 2020): 1-5. Accessed November 28, 2020. https://jurnal.amikom.ac.id/index.php/joism/article/view/158.