OSBORNE, Edward W.; HAMZAH, Ramlah. Use of Problem Solving Teaching Among Secondary Agriculture Teachers in Illinois. Journal of Agricultural Education, [S. l.], v. 30, n. 3, p. 29–36, 1989. DOI: 10.5032/jae.1989.03029. Disponível em: https://jae-online.org/index.php/jae/article/view/1560. Acesso em: 16 jul. 2024.