Handbook of Practical Program EvaluationMcLaughlin, J. A., & Jordan, G. B. (2015). Using logic models. In J. S. Wholey, H. P. Hatry, & K. E. Newcomer (Eds.), Handbook of practical program evaluation (pp. 62-87). Jossey-Bass.
Read Chapter 3, Using Logic Models. This is an excellent introduction to logic models in evaluation.