Enrique Pérez, J. “A Strain of Squash-Mosaic Virus and Other Cucurbit Viruses Found in Puerto Rico, During 1958-62”. The Journal of Agriculture of the University of Puerto Rico 47, no. 3 (July 1, 1963): 141–153. Accessed March 30, 2023. https://revistas.upr.edu/index.php/jaupr/article/view/12946.