JOHNSON, Donald M. Student Achievement And Factors Related To Achievement In A State FFA Agricultural Mechanics Contest. Journal of Agricultural Education, [S. l.], v. 32, n. 3, p. 23–28, 1991. DOI: 10.5032/jae.1991.03023. Disponível em: https://jae-online.org/index.php/jae/article/view/996. Acesso em: 11 aug. 2024.