O. Batuman, A. Levy, M. E. Hilf, P. J. Sieburth, W. O. Dawson, and R. H. Brlansky, “2021–2022 Florida Citrus Production Guide: Tristeza Decline: CG039/PP-181, rev. 3/2021”, EDIS, vol. 2021, no. CPG, Aug. 2021.