Yoke-Mui Lim and  Yahaya Ahmad,  Barriers to Competitive Tenders in Building Conservation Works.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 99(3). 804 - 809
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10000762.