SALUDIN, MOHAMAD NASIR, and TAN PEI KIAN. “THE IMPORTANCE OF CUSTOMER SATISFACTION AND CUSTOMER COMPLAINT TOWARDS A BETTER QUALITY SERVICE USING SIX SIGMA: AN ACADEMIC PERSPECTIVE”. Sains Humanika 53, no. 1 (August 15, 2010). Accessed December 19, 2024. https://sainshumanika.utm.my/index.php/sainshumanika/article/view/253.