M.C. MADUKWE. Effectiveness of Agricultural Extension Supervisors. Indian Journal of Extension Education, India, v. 29, n. 3&4, p. 1–6, 1993. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/161166. Acesso em: 15 jul. 2026.