K. Karim, M. J. Tajibu, R. Fitrianti, I. T. A. Reviane, and S. U. Nurbayani, “Consumer Behavior in Using Prepaid Electricity Systems in the Covid-19 Pandemic Period in Makassar City, Indonesia”, IJEEP, vol. 11, no. 5, pp. 172–177, Aug. 2021.