Memon, I. A., Q. B. Jamali, A. S. Jamali, M. K. Abbasi, N. A. Jamali, and Z. H. Jamali. “Defect Reduction With the Use of Seven Quality Control Tools for Productivity Improvement at an Automobile Company”. Engineering, Technology & Applied Science Research, vol. 9, no. 2, Apr. 2019, pp. 4044-7, doi:10.48084/etasr.2634.