Abdulah, Z, A Elshamly, and R Verschueren. “Management of the Plastic Product Life Cycle through QFDE”. Shanlax International Journal of Management 6, no. 2 (October 30, 2018): 1-6. Accessed September 12, 2025. https://www.shanlaxjournals.in/journals/index.php/management/article/view/131.