Hassan, Shahizan, Feng Li, Muhammad Firdaus Sahak, Manivannan Perumal, and Mohd Yusoff Ab Ghani. “The Successful Implementation of Key Performance Indicator System in a Telecommunications Company”. Global Business Management Review (GBMR) 6, no. Special Issue (July 27, 2022): 95–110. Accessed May 7, 2024. https://e-journal.uum.edu.my/index.php/gbmr/article/view/16944.