Agresdiant, M. N. D., and R. Amelia. “Impact of Perceived Usefulness on Actual Chatbot System Usage: An Attitude Toward Using Mediation Approach on Shopee E-Commerce”. Jurnal Informatika Ekonomi Bisnis, Vol. 8, no. 2, June 2026, pp. 506-13, doi:10.37034/infeb.v8i2.1438.