Walls, Andrew F. Mission in the 21st century: exploring the five marks of global mission / Andrew F. Walls; Cathy Ross - Maryknoll, N.Y. : Orbis Books, 2008 - xvi, 219 p. : ill;. 24 cm. ISBN: 0232527202 9780232527209 Subjects--Topical Terms: Missions.21st century. LC Class. No.: BV2061.3 / .M57 2008