Abdulkarim, Buhari, Mohd Rusli Yacob, Ahmad Makmom Abdullah, and Alias Radam. 2016. “Households Preferences and Willingness to Pay for Watershed Services Attributes in North Selangor Peat Swamp Forest Malaysia”. Asian Journal of Economic Modelling 5 (1):98-109. https://doi.org/10.18488/journal.8/2017.5.1/8.1.98.109.