Kristian Peterson has written a very nice review of A Critical Introduction to the Study of Religion for the Journal of the American Academy of Religion. Peterson writes,
A Critical Introduction offers a clear, thorough, and effective introduction to critical approaches to religion as social phenomena. It brings the often-verbose theoretical lenses of sociology, anthropology, and cultural studies, and the sometimes-complicated critiques of the field of Religious Studies to a novice readership. Martin has accomplished his goal of offering useful concepts for critically thinking about religion and society. A unique and notable contribution is that he provides effective approaches from which students can ask new questions of our subject.
You can find the full review here.