APA-čujuhus (7. p.)
Engel, F. J. (1996). A clouded future?: Advancing North American world missions. Christian Stewardship Association.
Chicago-čujuhus (17. p.)
Engel, F. James. A Clouded Future?: Advancing North American World Missions. Milwaukee: Christian Stewardship Association, 1996.
MLA-čujuhus (9. p.)
Engel, F. James. A Clouded Future?: Advancing North American World Missions. Christian Stewardship Association, 1996.
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