Cahyadi, Adi. “Mengamankan Transaksi Di Internet: Suatu Tinjauan Terhadap Justifikasi Dan Metode”. Journal The Winners 5, no. 1 (March 31, 2004): 34-44. Accessed July 22, 2024. https://journal.binus.ac.id/index.php/winners/article/view/3826.