Levy, A., O. Batuman, and R. H. Brlansky. “2020–2021 Florida Citrus Production Guide: Exocortis, Cachexia, and Other Viroids: Chapter 40, PP-179/CG037, Rev. 3/2020”. EDIS, vol. 2020, no. CPG, Aug. 2020, doi:10.32473/edis-cg037-2020.