Laksono, T. D., and D. S. Wiyanti. “THE ANALYSIS OF COMPARISON OF FLOOR CERAMIC INSTALLATION PRODUCTIVITY BASED ON THE COMPOSITION OF LABOR”. International Journal of Engineering Technologies and Management Research, vol. 8, no. 7, July 2021, pp. 19-25, doi:10.29121/ijetmr.v8.i7.2021.985.