KELTA, Dougou; LUFT, Vernon D. Professional Competencies Needed By Beginning Cooperative Extension Agricultural Agents In Minnesota, North Dakota, And South Dakota. Journal of Agricultural Education, [S. l.], v. 28, n. 4, p. 40–49, 1987. DOI: 10.5032/jaatea.1987.04040. Disponível em: https://jae-online.org/index.php/jae/article/view/1639. Acesso em: 14 may. 2026.