Iguina de George, L. M., A. L. Collazo de Rivera, J. R. Benero, and W. Pennock. “Provitamin A and Vitamin C Contents of Several Varieties of Mango (Mangifera Indica L.) Grown in Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 53, no. 2 (April 1, 1969): 100–105. Accessed December 9, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/11164.