Lalujan, V. V., and Y. Rahardja. “Analisis Tingkat Kepuasan Pengguna Layanan E-Wallet DANA Menggunakan Metode PIECES”. Journal of Information Technology Ampera, vol. 4, no. 3, Nov. 2023, pp. 207-21, https://journal-computing.org/index.php/journal-ita/article/view/426.