CAMPBELL, Michael; MARTIN, Robert. Qualitative Research As A Tool For Agricultural And Extension Education. Journal of Agricultural Education, [S. l.], v. 33, n. 4, p. 55–60, 1992. DOI: 10.5032/jae.1992.04055. Disponível em: https://jae-online.org/index.php/jae/article/view/427. Acesso em: 22 nov. 2024.