Ewing, John C., and M. Susie Whittington. “Describing the Cognitive Level of Professor Discourse and Student Cognition in College of Agriculture Class Sessions”. Journal of Agricultural Education 50, no. 4 (December 31, 2009): 36–49. Accessed July 27, 2024. https://jae-online.org/index.php/jae/article/view/1295.