OWEN, Shubel. To Teach. Journal of Agricultural Education, [S. l.], v. 10, n. 2, p. 1–11, 1969. DOI: 10.5032/jaatea.1969.02001. Disponível em: https://jae-online.org/index.php/jae/article/view/498. Acesso em: 10 aug. 2024.