Ambong Khalid, Sopiah, Sarifah Fauziah Syed Draman1, Siti Rozaimah Sheikh Abdullah, Nornizar Anuar, and . . “Preparation and Characterization of Citric Acid Modified Cellulose in Remediation of Acid Mine Drainage”. International Journal of Engineering & Technology 7, no. 4.42 (December 29, 2018): 127–129. Accessed April 30, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/25694.