Williamson, J. G., Park Brown, S., & Wichman, T. (2009). Florida 4–H Horticulture Identification and Judging: Contest Rules and Glossary: 4HPSJ20/4H004, rev. 8/2009. EDIS, 2016(3). https://doi.org/10.32473/edis-4h004-1992 (Original work published March 1, 1992)