APA-viite (7. p.)
Willmott, H. M. (1961). The doors were opened: The remarkable advance of the gospel in Ethiopia. Sudan Interior Mission.
Chicago-viite (17. p.)
Willmott, Helen Mary. The Doors Were Opened: The Remarkable Advance of the Gospel in Ethiopia. London: Sudan Interior Mission, 1961.
MLA-viite (9. p.)
Willmott, Helen Mary. The Doors Were Opened: The Remarkable Advance of the Gospel in Ethiopia. Sudan Interior Mission, 1961.
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