Cancel, Luis E., and Evangelina R. de Hernández. “Chemical Changes in Citron Fruit Bars Due to PH Changes During Processing”. The Journal of Agriculture of the University of Puerto Rico 61, no. 3 (July 1, 1977): 279–289. Accessed April 18, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10425.