Sitorus, Peniel Sam Putra. “Analisis Vigenere Chipter Dalam Tulisan Nama Mahasiswa Di Hasil Ujian Akhir Semester Ganjil T.A 2023 2024”. Innovative: Journal Of Social Science Research, vol. 3, no. 5, Nov. 2023, pp. 9107-16, https://j-innovative.org/index.php/Innovative/article/view/5957.