FRICK, Martin J.; BIRKENHOLZ, Robert J.; MACHTMES, Krissanna. 4-H Member Knowledge And Perception Of Agriculture. Journal of Agricultural Education, [S. l.], v. 36, n. 3, p. 43–49, 1995. DOI: 10.5032/jae.1995.03043. Disponível em: https://jae-online.org/index.php/jae/article/view/2169. Acesso em: 19 oct. 2024.