Azmi Rohani, Lukman Abu Bakar, Wahid Razzaly, and Siti Sarawati Johar, PENA JAUHAR SIRI 2. Penerbit UTHM, 2019. Accessed: Aug. 26, 2026. [Online]. Available: https://monograph.uthm.edu.my/index.php/penerbituthm/catalog/book/232