Saddler, G. S., and J. F. Bradbury. "Genus XI. Xylella." In Bergey's Manual of Systematic Bacteriology, edited by G. Garrity, 119-123. 2nd ed. Vol. 2 (The Proteobacteria), Part B (The Gammaproteobacteria). Berlin & Heidelberg, Germany: Springer-Verlag, 2005. Rennie, W. J., and V. Cockerell. "The challenge of seed-borne disease." In Proceedings of the Fifth Cereals R&D Conference, 8.1-8.18. Cambridge: Home-Grown Cereals Authority, 1995. Rennie, W. J. "Seedborne diseases." In The epidemiology of plant diseases, edited by D. G. Jones, 295-307. Dordrecht: Kluwer Academic Publishers, 1998. Rennie, W. J., and V. Cockerell. "Strategies for cereal seed treatment." In Seed Treatment: Progress and Prospects, 17-126. BCPC Monograph Series ; No. 57. Bracknell: British Crop Protection Council, 1994.