Bolaños, Carlos, Mildred Zapata, Brent Brodbeck, Pete Andersen, and Linda Wessel-Beaver. “Effect of Shade and Season on Bacterial Endophytes Isolated from Coffee (Coffea Arabica) Trees in Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 99, no. 1 (January 1, 2015): 37–51. Accessed November 30, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/2525.