Sotomayor-Ríos, A., J. Rodríguez-García, and S. Silva. “Yield Comparison of Four Forage Grasses at Two Cutting Heights and Three Harvest Intervals”. The Journal of Agriculture of the University of Puerto Rico 58, no. 1 (January 1, 1974): 26–36. Accessed November 26, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/10697.