APA (7e ed.) Bronvermelding
Willmott, H. M. (1961). The doors were opened: The remarkable advance of the gospel in Ethiopia. Sudan Interior Mission.
Chicago (17e ed.) Bronvermelding
Willmott, Helen Mary. The Doors Were Opened: The Remarkable Advance of the Gospel in Ethiopia. London: Sudan Interior Mission, 1961.
MLA (9e ed.) Bronvermelding
Willmott, Helen Mary. The Doors Were Opened: The Remarkable Advance of the Gospel in Ethiopia. Sudan Interior Mission, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.