APA-referens (7:e uppl.)
Douglas, J. (1975). Let the earth hear his voice: International congress on world evangelization...... World wide.
Chicago-referens (17:e uppl.)
Douglas, J.D. Let the Earth Hear His Voice: International Congress on World Evangelization...... Minneapolis: World wide, 1975.
MLA-referens (9:e uppl.)
Douglas, J.D. Let the Earth Hear His Voice: International Congress on World Evangelization...... World wide, 1975.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.