Habib, N. Z., S. E. Zoorob, C. A. Ng, M. Zahiraniza, I. Kamaruddin, Y. A. Syafiq, S. Sumathi, N. Humayun, and M. M. Sohaib. “Environmentally Friendly Vege-Roofing Tile: An Investigation Study”. Academic Journal of Civil Engineering 33, no. 2 (June 22, 2015): 654-660. Accessed April 25, 2024. https://journal.augc.asso.fr/index.php/ajce/article/view/1793.