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