Caraballo, Elvin, Guillermo Fornaris, and Hernán Ruiz. 1990. “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 (3):323-26. https://doi.org/10.46429/jaupr.v74i3.6667.