WASET
    Mohammad H. Almomani and  Rosmanjawati Abdul Rahman,  An Adequate Choice of Initial Sample Size for Selection Approach.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 1808 - 1812
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/771.