Iguina de George, L. M., et al. “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, vol. 53, no. 2, Apr. 1969, pp. 100-5, doi:10.46429/jaupr.v53i2.11164.