Ferré, N. F. (1946). Faith and reason. Harper and Brothers.
Cita Chicago (17th ed.)Ferré, Nels F.S. Faith and Reason. Harper and Brothers, 1946.
Cita MLA (9th ed.)Ferré, Nels F.S. Faith and Reason. Harper and Brothers, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.