Caraballo, Elvin, Guillermo Fornaris, and Hernán Ruiz. “SHORT-DAY ONION CULTIVARS IN SOUTHERN PUERTO RICO DURING THE 1988-89 GROWING SEASON”. The Journal of Agriculture of the University of Puerto Rico 74, no. 3 (July 1, 1990): 323–326. Accessed April 26, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/6667.