Ba-Batin, Abubaker Salem Saleh, et al. “Effectiveness of Green Strategies to Reduce Carbon Emission in the Putrajaya Campus Buildings of Universiti Tenaga Nasional”. International Journal of Engineering and Technology, vol. 7, no. 4.35, Nov. 2018, pp. 472-5, https://doi.org/10.14419/ijet.v7i4.35.22865.