BURRIS, Scott; GARTON, Bryan L. Effect Of Instructional Strategy On Critical Thinking And Content Knowledge: Using Problem-Based Learning In The Secondary Classroom. Journal of Agricultural Education, [S. l.], v. 48, n. 1, p. 106–116, 2007. DOI: 10.5032/jae.2007.01106. Disponível em: https://jae-online.org/index.php/jae/article/view/1345. Acesso em: 23 jun. 2026.