Cita APA (7th ed.)
Allen, C. L. (1973). The miracle of hope. Revell.
Cita Chicago (17th ed.)
Allen, Charles Livingstone. The Miracle of Hope. Old Tappan, N.J.: Revell, 1973.
Cita MLA (9th ed.)
Allen, Charles Livingstone. The Miracle of Hope. Revell, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.