Yuniati, Trihastuti, and Iqsyahiro Kresna A. “Secure Electronic Payment Methods for Online Shopping Based on Visual Cryptography: Metode Pembayaran Elektronik Yang Aman Pada Online Shopping Berbasis Kriptografi Visual”. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi), vol. 4, no. 2, Apr. 2020, pp. 319-28, https://doi.org/10.29207/resti.v4i2.1732.