CULP, III. Motivating And Retaining Adult Volunteer 4-H Leaders. Journal of Agricultural Education, [S. l.], v. 38, n. 2, p. 1–7, 1997. DOI: 10.5032/jae.1997.02001. Disponível em: https://jae-online.org/index.php/jae/article/view/1128. Acesso em: 17 jun. 2026.