Abruña-Rodríguez, F., E. G. Boneta García, J. Vicente-Chandler, and S. Silva. “Experiments on Tanier Production With Conservation in Puerto Rico’s Mountain Region”. The Journal of Agriculture of the University of Puerto Rico, vol. 51, no. 2, Apr. 1967, pp. 167-75, doi:10.46429/jaupr.v51i2.11464.