Zulkarnen, Zulfadzli Yusrin, and Noorli Ismail. “The Effect of Coconut Fiber on the Cement Mortar Properties”. Recent Trends in Civil Engineering and Built Environment 4, no. 2 (July 11, 2023): 307–316. Accessed February 22, 2024. https://publisher.uthm.edu.my/periodicals/index.php/rtcebe/article/view/5773.