HARE, R. M. (1963). Freedom and reason. O.U.Pr..
Cita Chicago (17th ed.)HARE, Richard M. Freedom and Reason. London,: O.U.Pr., 1963.
Cita MLA (9th ed.)HARE, Richard M. Freedom and Reason. O.U.Pr., 1963.
Atenció: Aquestes cites poden no estar 100% correctes.