APA (7th ed.) Zitazioa

Willmott, H. M. J. The doors were opened: The remarkable advance of the gospel in Ethiopia. Sudan Interior Mission.

Chicago Style (17th ed.) Zitazioa

Willmott, Helen Mary Jeffrey. The Doors Were Opened: The Remarkable Advance of the Gospel in Ethiopia. London: Sudan Interior Mission.

MLA (9th ed.) Zitazioa

Willmott, Helen Mary Jeffrey. The Doors Were Opened: The Remarkable Advance of the Gospel in Ethiopia. Sudan Interior Mission.