Goyal, Megh R., Tillak Persaud, and Luis E. Rivera. “Labor-Input Requirements for Experimental Production of Drip Irrigated Vegetables”. The Journal of Agriculture of the University of Puerto Rico 72, no. 1 (January 1, 1988): 41–50. Accessed July 17, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/6832.