Ruppert, K. C., Williamson, J. G., Black, R. J., & Stephens, J. M. (1992). Florida 4–H Horticulture Identification and Judging Study Manual: Rules and Glossary: 4HPSJ20/4H004, 3/1992. EDIS, 2016(3). https://doi.org/10.32473/edis-4h004-1992