HEIMGARTENER, Dale C.; FOSTER, Richard M. Perceptions Of Vocational Agriculture Instructors Regarding Knowledge And Importance Of Including Selected Agricultural Mechanics Units In The Vocational Agriculture Programs. Journal of Agricultural Education, [S. l.], v. 22, n. 1, p. 57–64, 1981. DOI: 10.5032/jaatea.1981.01057. Disponível em: https://jae-online.org/index.php/jae/article/view/980. Acesso em: 2 may. 2026.