Wittich, C. M., Mauck, K. F., Mandrekar, J. N., Gluth, K. A., West, C. P., Litin, S. C., & Beckman, T. J. (2011). Improving Participant Feedback to Continuing Medical Education Presenters in Internal Medicine: A Mixed-Methods Study. Springer-Verlag.

Wittich, Christopher M., Karen F. Mauck, Jayawant N. Mandrekar, Karol A. Gluth, Colin P. West, Scott C. Litin, و Thomas J. Beckman. Improving Participant Feedback to Continuing Medical Education Presenters in Internal Medicine: A Mixed-Methods Study. Springer-Verlag, 2011.

Wittich, Christopher M., et al. Improving Participant Feedback to Continuing Medical Education Presenters in Internal Medicine: A Mixed-Methods Study. Springer-Verlag, 2011.