R. Mohd Salleh, “Customer Satisfaction Analysis Using Quality Function Deployment: A Case Study on Malaysian Domestic Airlines”, EKST, vol. 2, no. 1, pp. 056–068, Aug. 2022, Accessed: Jul. 18, 2024. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/4932