Afroz, Rafia, et al. “Willingness to Pay for Crop Insurance to Adapt Flood Risk by Malaysian Farmers: An Empirical Investigation of Kedah”. International Journal of Economics and Financial Issues, vol. 7, no. 4, July 2017, pp. 1-9, https://econjournals.com.tr/index.php/ijefi/article/view/4355.