Cita APA (7th ed.)
Cummons, B. D. (1957). The problem of suffering. Zondervan Publishing House.
Cita Chicago (17th ed.)
Cummons, Bruce D. The Problem of Suffering. Grand Rapids, Mich.: Zondervan Publishing House, 1957.
Cita MLA (9th ed.)
Cummons, Bruce D. The Problem of Suffering. Zondervan Publishing House, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.