Román, Jessé. “A New Species of the Genus Helicotylenchus (Nematoda: Hoplolaimidae) Attacking Sugarcane”. The Journal of Agriculture of the University of Puerto Rico 45, no. 4 (October 1, 1961): 300–303. Accessed November 27, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/13764.