Johnson, Donald M., George W. Wardlow, and Timothy D. Franklin. “METHOD OF REINFORCEMENT AND STUDENT GENDER: EFFECTS ON ACHIEVEMENT IN AGRISCIENCE EDUCATION”. Journal of Agricultural Education 39, no. 4 (December 31, 1998): 18–27. Accessed November 22, 2024. https://jae-online.org/index.php/jae/article/view/1872.