ROBERTS, T. Grady; BALL, Anna L. Secondary Agricultural Science as Content and Context for Teaching. Journal of Agricultural Education, [S. l.], v. 50, n. 1, p. 81–91, 2009. DOI: 10.5032/jae.2009.01081. Disponível em: https://jae-online.org/index.php/jae/article/view/1663. Acesso em: 14 jul. 2026.