LEIBY, Brian L.; ROBINSON, J. Shane; KEY, James P. Assessing the Impact of a Semester-long Course in Agricultural Mechanics on Pre-service Agricultural Education Teachers’ Importance, Confidence, and Knowledge of Welding. Journal of Agricultural Education, [S. l.], v. 54, n. 1, p. 179–192, 2013. DOI: 10.5032/jae.2013.01179. Disponível em: https://jae-online.org/index.php/jae/article/view/1930. Acesso em: 21 may. 2026.