ROSCH, David; SIMONSEN, Jon C.; VELEZ, Jonathan J. Eamining Year-long Leadership Gains in FFA Members by Prior FFA Involvement, Class Year, and Gender. Journal of Agricultural Education, [S. l.], v. 56, n. 3, p. 227–241, 2015. DOI: 10.5032/jae.2015.03227. Disponível em: https://jae-online.org/index.php/jae/article/view/962. Acesso em: 22 jun. 2026.