Redho Maland Aresta, Ero Wahyu Pratomo, Vicky Geraldino, Joko Dwi Santoso, and Sri Mulyatun. 2020. “IMPLEMENTASI MULTI ENKRIPSI ROT 13 PADA SYMBOL WHATSAPP”. JOURNAL OF INFORMATION SYSTEM MANAGEMENT 2 (1):1-5. https://jurnal.amikom.ac.id/index.php/joism/article/view/158.