Bear, Forest, and D. A. Drees. “An Evaluation of the Use of Drill and Pratice Computer Instructional Materials for Reviewing Instruction”. Journal of Agricultural Systems, Technology, and Management 3, no. 2 (April 1, 1988): 9–12. Accessed February 23, 2025. https://jastm.org/index.php/jastm/article/view/11895.