Nazirah Zainul Abidin,  Sustainable Construction in Malaysia – Developers- Awareness.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 480 - 487
    [viewed 13 April 2021]. Available from: https://publications.waset.org/pdf/1992.