Murphrey, T. P., Rutherford, T. A., Doerfert, D. L., Edgar, L. D., & Edgar, D. W. (2014). An Examination of Usability of a Virtual Environment for Students Enrolled in a College of Agriculture. Journal of Agricultural Education, 55(4), 38–52. https://doi.org/10.5032/jae.2014.04038