M. B. Cagayao, M. L. R. Abergos, M. N. Anciano, C. M. Q. Del Rosario, R. A. Dionco, and J. P. Briones, “Effect of Digital Wallet Usage on the Financial Behavior of Millennials in Metro Manila, Philippines”, IJEBCE, vol. 6, no. 2, pp. 25–43, Jul. 2026.