HILTON, James W. Perceptions Of Vocational Agriculture Instructors And Superintendents Concerning Vocational Agriculture Summer Programs In Iowa. Journal of Agricultural Education, [S. l.], v. 22, n. 3, p. 29–35, 1981. DOI: 10.5032/jaatea.1981.03029. Disponível em: https://jae-online.org/index.php/jae/article/view/692. Acesso em: 2 may. 2026.