Pérez, Agripino, Arturo Cedeño-Maldonado, Ismael Reyes, and Justo López. “Growth and Yield of Mango Trees at Three Stages of Development Influenced by Rootstock, Scion Variety”. The Journal of Agriculture of the University of Puerto Rico 71, no. 4 (October 1, 1987): 341–348. Accessed June 25, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/6979.