WITT, Phillip A.; ULMER, Jonathan D.; BURRIS, Scott; BRASHEARS, Todd; BURLEY, Hansel. A Comparison of Student Engaged Time in Agriculture Instruction. Journal of Agricultural Education, [S. l.], v. 55, n. 2, p. 16–32, 2014. DOI: 10.5032/jae.2014.02016. Disponível em: https://jae-online.org/index.php/jae/article/view/381. Acesso em: 19 may. 2026.