Jackson, George C., and Carmelo Sierra Morales. “EVALUATION OF HERCULES 22234 (ANTOR) AS A PREEMERGENCE HERBICIDE ON CABBAGE”. The Journal of Agriculture of the University of Puerto Rico 61, no. 4 (October 1, 1977): 516–518. Accessed November 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10420.