WASET
    J. Nisar and  S. Halim,  The Effect of Critical Activity on Critical Path and Project Duration in Precedence Diagram Method.   journal   = {International Journal of Structural and Construction Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2018, vol. 141(9). 837 - 843
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10009494.