Shenk, W. R. (1999). Changing frontiers of mission. Orbis Books.
Lua i Stíl Chicago (17ú heag.)Shenk, Wilbert R. Changing Frontiers of Mission. Maryknoll, N.Y.: Orbis Books, 1999.
Lua MLA (8ú heag.)Shenk, Wilbert R. Changing Frontiers of Mission. Orbis Books, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.