Martin, F. W., and E. J. Rodríguez-Sosa. “Preference for Color, Sweetness, and Mouthfeel of Sweet Potato in Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 69, no. 1 (January 1, 1985): 99–106. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/7331.