Farid Ezanee Mohamed Ghazali,  Operational Risks for Highway Projects in Malaysia.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 366 - 369
    [viewed 16 December 2019]. Available from: https://publications.waset.org/pdf/13695.