Chandra, J., F. F. Ramadhani, R. D. Paqi, and M. R. Ramadhan. “The Impact of Perfect Competition Market Structure on Firm Performance in the Coffee Culinary Industry”. Journal of Economics, Entrepreneurship, Management Business and Accounting, vol. 2, no. 3, Aug. 2024, pp. 116-20, doi:10.61255/jeemba.v2i3.373.