Dewdney, M. M., E. G. Johnson, and J. H. Graham. “2018–2019 Florida Citrus Production Guide: Phytophthora Foot Rot and Root Rot: PP-156/CG009, Rev. 5/2018”. EDIS, vol. 2018, Aug. 2018, p. 7, doi:10.32473/edis-cg009-2018.