Program Evaluation Theory and Practice: A Comprehensive Guide offers an in-depth exploration of the theoretical foundations and practical applications of program evaluation. Authored by Donna M. Mertens and published by The Guilford Press, this second edition provides a thorough overview for professionals and students alike. Spanning 620 pages, it covers essential topics such as evaluation designs, data collection methods, and ethical considerations in the field. This guide is ideal for those seeking to enhance their understanding of how to effectively evaluate programs and policies in various settings.