Abdul Kadir, Aeslina, Zhe Jian Choo, Noor Amira Sarani, Mohd Ikhmal Haqeem Hassan, and Abbas Mohajerani. 2022. “Study on the Carbon Footprint Reduction Through Recycling Activities in UTHM: Effect of COVID-19 Pandemic”. International Journal of Sustainable Construction Engineering and Technology 13 (4): 144-53. https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/12322.