Geach, P. T. (1977). Providence and Evil: The Stanton lectures. C.U.Pr.
Cita Chicago (17th ed.)Geach, Peter Thomas. Providence and Evil: The Stanton Lectures. Cambridge: C.U.Pr, 1977.
Cita MLA (9th ed.)Geach, Peter Thomas. Providence and Evil: The Stanton Lectures. C.U.Pr, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.