DEPPE, Catherine A.; CULP, III. Ohio 4-H Agents’ Perceptions Of The Level Of Importance And Frequency Of Use Of The Eighteen Components Of The Gems Model Of Volunteer Administration. Journal of Agricultural Education, [S. l.], v. 42, n. 4, p. 32–42, 2001. DOI: 10.5032/jae.2001.04032. Disponível em: https://jae-online.org/index.php/jae/article/view/780. Acesso em: 16 may. 2026.