Vélez-Santiago, J., J. A. Arroyo-Aguilú, S. Torres-Rivera, and N. Corchado Juarbe. “Performance and Chemical Composition of 18 Nondormant Alfalfa Cultivars at the Lajas Valley”. The Journal of Agriculture of the University of Puerto Rico 67, no. 3 (July 1, 1983): 204–212. Accessed April 24, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/7714.