Crenshaw, P., E. Hale, and S. L. Harper. “Producing Intellectual Labor In The Classroom: The Utilization Of A Critical Thinking Model To Help Students Take Command Of Their Thinking”. Journal of College Teaching & Learning (TLC), vol. 8, no. 7, July 2011, pp. 13-26, doi:10.19030/tlc.v8i7.4848.