Benero, J. R., A. L. Collazo de Rivera, and L. M. I. de George. “Studies on the Preparation and Shelf-Life of Soursop, Tamarind, and Blended Soursop-Tamarind Soft Drinks”. The Journal of Agriculture of the University of Puerto Rico 58, no. 1 (January 1, 1974): 99–104. Accessed April 26, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10709.