Mowbray, C. T., Holter, M. C., Teague, G. B., & Bybee, D. (2003). Fidelity criteria: Development, measurement and evaluation. American Journal of Evaluation, 24, 315-340.
2.
Renger, R., & Titcomb, A. (2002). A three-step approach to teaching logic models. American Journal of Evaluation, 23, 493-503.