Noorul Hudai Abdullah, Norhayati Ngadiman, Nor Baizura Hamid, Hazirah Bujang, Suhaila Sahat, Muhammad Azraie Abdul Kadir. Environmental Engineering (Laboratory). Penerbit UTHM; 2023. Accessed July 18, 2024. https://penerbit.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/384