Sud, U., H. Bathla, K. Muralidharan, D. Mathur, C. Thamban, and C. Sairam. “Estimating Cost of Production of Coconut in a Region”. Journal of Plantation Crops, vol. 37, no. 3, Oct. 2009, pp. 201-5, https://updatepublishing.com/journal/index.php/JPC/article/view/5970.