Andrea Gray, Leith Gray, Bob Fish, and Michael Baker. “Networks of Redemption: A Preliminary Statistical Analysis of Fruitfulness in Transformational and Attractional Approaches.” International Journal of Frontier Missiology 27, no. 2 (2010):89-95. What is the relationship between the church planting approach used by the cross-cultural worker, and the number and characteristics of actual churches planted? In answering this question, Gray et al consider the “attractional” and “transformational” models originally described by Gray and Gray in International Journal of Frontier Missiology 26, no. 1 (2009):19-28.