Asenjo, C. F., E. R. de Hernández, L. D. Rodríguez, and M. G. de Andino. “Vitamins in Canned Puerto Rican Fruit Juices and Nectars”. The Journal of Agriculture of the University of Puerto Rico, vol. 52, no. 1, Jan. 1968, pp. 64-70, doi:10.46429/jaupr.v52i1.11724.