J, R. et al. 2018. Probable Maximum Precipitation Comparison using Hershfield’s Statistical Method and Hydro-Meteorological Method for Sungai Perak Hydroelectric Scheme. International Journal of Engineering & Technology. 7, 4.35 (Nov. 2018), 603–608. DOI:https://doi.org/10.14419/ijet.v7i4.35.22922.