The following list of journal articles and books provide extended reading on topics covered in chapter 17 in the second edition. Please note that journal articles are free to access, whereas book extracts (denoted by methods.sagepub.com URLs) require your university to have a subscription to SAGE Research Methods.
White, H. (2010). A contribution to current debates in impact evaluation. Evaluation, 16(2), 153-164.
This article examines recent debates on impact evaluation.