J. B. Sartain, L. E. Trenholm, E. F. Gilman, T. A. Obreza, and G. Toor, “Frequently Asked Questions about Landscape Fertilization for Florida-Friendly Landscaping Ordinances: ENH1115/WQ143, rev. 1/2009”, EDIS, vol. 2009, no. 1, Jan. 2009.