Ellis, M. A., E. H. Paschal, E. J. Ravalo, and Eileen Rosario. “Effect of Growing Location on Internally-Seedborne Fungi, Seed Germination, and Field Emergence of Pigeon Pea in Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 62, no. 4 (October 1, 1978): 355–360. Accessed April 25, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10346.