Lua APA (7ú heag.)
Engel, F. J. (1996). A clouded future?: Advancing North American world missions. Christian Stewardship Association.
Lua i Stíl Chicago (17ú heag.)
Engel, F. James. A Clouded Future?: Advancing North American World Missions. Milwaukee: Christian Stewardship Association, 1996.
Lua MLA (9ú heag.)
Engel, F. James. A Clouded Future?: Advancing North American World Missions. Christian Stewardship Association, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.