N. H. Julayhe and M. M. Rahman, “Greening Existing Buildings in Brunei Darussalam”, IJIE, vol. 13, no. 7, pp. 34–39, Sep. 2021, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/7428