Martin, Franklin W., and Ruth Ruberté. “Yams (Dioscorea spp.) for Production of Chips and French Fries”. The Journal of Agriculture of the University of Puerto Rico 56, no. 3 (July 1, 1972): 228–234. Accessed November 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10829.