"Theological Roots of Pentecostalism" by Donald W. Dayton is a 1987 textbook published by Baker Academic. This trade paperback delves into the historical and theological underpinnings of Pentecostalism, a charismatic branch of Christianity. With 204 pages, the book explores the origins and evolution of Pentecostal beliefs and practices, making it a valuable resource for those interested in the history and theology of this movement within Christianity.