Navarro, Adriano, and James Newman. “Two Drip Irrigation Rates and Two Emitter Placements on Tomato Production”. The Journal of Agriculture of the University of Puerto Rico 73, no. 1 (January 1, 1989): 23–29. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/6370.