Sotomayor-Ríos, A., and D. E. Weibel. “Evaluation of Seven Sorghums, Selfed and Crossed to Three Cytoplasmic Male-Sterile Lines”. The Journal of Agriculture of the University of Puerto Rico 62, no. 2 (April 1, 1978): 156–164. Accessed July 17, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10376.