Meléndez, P. L., R. Rodríguez, and L. Wessel-Beaver. “Bean Rust Control under Field Conditions With Systemic and Contact Fungicides”. The Journal of Agriculture of the University of Puerto Rico, vol. 70, no. 1, Jan. 1986, pp. 45-55, doi:10.46429/jaupr.v70i1.7074.