Abrams, Raúl, and George C. Jackson. “Influence of Root-Inducing Substances and Time Intervals on the Rooting of Acerola Cuttings”. The Journal of Agriculture of the University of Puerto Rico 43, no. 3 (July 1, 1959): 152–158. Accessed April 19, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12576.