Ramos Santana, Rafael, and José E. Rodríguez Arroyo. “Introductions of Hemarthria Altissima in the Humid Corozal Highlands”. The Journal of Agriculture of the University of Puerto Rico 76, no. 3-4 (October 1, 1992): 161–170. Accessed September 26, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/4155.