Geisler, N. (1976). Christian apologetics. Baker Book House.
Cita Chicago (17th ed.)Geisler, Norman. Christian Apologetics. Michigan: Baker Book House, 1976.
Cita MLA (9th ed.)Geisler, Norman. Christian Apologetics. Baker Book House, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.