Powmya, Ayisha, and Nazirah Zainul Abidin. “The Challenges of Green Construction in Oman”. International Journal of Sustainable Construction Engineering and Technology, vol. 5, no. 1, July 2014, pp. 33-41, https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/867.