Pennock, W., and H. Gandía. “Effect of Slip Size, Slip Storage, and Time of Planting on Yield of Red Spanish Pineapple in Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 59, no. 3 (July 1, 1975): 141–164. Accessed April 19, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10603.