Sotomayor-Ríos, A. “Effect of Rates and Frequency of Application of Methiocarb As a Bird Repellent on Sorghum”. The Journal of Agriculture of the University of Puerto Rico 61, no. 3 (July 1, 1977): 332–336. Accessed March 29, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10432.