APA (7e ed.) Bronvermelding
Nygaard, N. E. (1961). Trumpet of salvation: The story of William and Catherine Booth. Zondervan Publishing House.
Chicago (17e ed.) Bronvermelding
Nygaard, Norman E. Trumpet of Salvation: The Story of William and Catherine Booth. Michigan: Zondervan Publishing House, 1961.
MLA (9e ed.) Bronvermelding
Nygaard, Norman E. Trumpet of Salvation: The Story of William and Catherine Booth. Zondervan Publishing House, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.