Vera, Nanda, and Suryanto Suryanto. “Competency Development of Quality Control in Automotive Companies to Improve Service Quality”. STRADA Jurnal Ilmiah Kesehatan 10, no. 1 (May 2, 2021): 385-391. Accessed June 22, 2021. https://sjik.org/index.php/sjik/article/view/643.