Steiner, G., and Edna M. Buhrer. “The Plant-Nematode Problem of the American Tropics”. The Journal of Agriculture of the University of Puerto Rico 48, no. 2 (April 1, 1964): 69–100. Accessed July 17, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12980.