Bird, William A., Michael J. Martin, and Jon C. Simonsen. “Student Motivation for Involvement in Supervised Agricultural Experiences: An HistoricalPerspective”. Journal of Agricultural Education 54, no. 1 (March 28, 2013): 31–46. Accessed June 26, 2026. https://jae-online.org/index.php/jae/article/view/1919.