VAN TILBURG, Emmalou. PARTICIPATION AND PERSISTENCE IN CONTINUING LIFELONG LEARNING EXPERIENCES OF THE OHIO COOPERATIVE EXTENSION SERVICE: AN INVESTIGATION USING EXPECTANCY VALENCE. Journal of Agricultural Education, [S. l.], v. 30, n. 4, p. 42–46, 1989. DOI: 10.5032/jae.1989.04042. Disponível em: https://jae-online.org/index.php/jae/article/view/2240. Acesso em: 2 may. 2026.