EASTON, J.; GLAUER, D. J. Plant Connections Leader’s Guide: 4H PSL 21/4H192, rev. 1/2015. EDIS, [S. l.], v. 2015, n. 2, p. 195, 2015. DOI: 10.32473/edis-4h192-2015. Disponível em: https://journals.flvc.org/edis/article/view/128162. Acesso em: 25 mar. 2023.