Religious Pluralism: Challenges for Pentecostalism in India. Bangalore, India: Centre for Contemporary Christianity, 2006.
Spirit-Shaped Mission: A Holistic Charismatic Missiology. Waynesboro, GA: Paternoster Publishing, 2005.
Miracles, Missions, and American Pentecostalism. Maryknoll, NY: Orbis Books, 2010.
Third Force in Missions: A Pentecostal Contribution to Contemporary Mission Theology. Peabody, MA: Hendrickson Publishers, 1985.
Global Pentecostalism: Encounters with Other Religious Traditions. London: I. B. Tauris, 2009.