LWIANTORO, Gerardo Axel; SALSABIL, Farhan Putra; ADITANTYO, Gregorius A. N.; SUHARTONO, Derwin. Utilization of QR Code for Tracking Digital Expenses. Engineering, MAthematics and Computer Science Journal (EMACS), [S. l.], v. 3, n. 2, p. 59–63, 2021. DOI: 10.21512/emacsjournal.v3i2.6533. Disponível em: https://journal.binus.ac.id/index.php/EMACS/article/view/6533. Acesso em: 4 nov. 2025.