Feldmann, C. (1993). Friedrich Spee: Christian Feldmann. Herder.
Cita Chicago (17th ed.)Feldmann, Christian. Friedrich Spee: Christian Feldmann. Freiburg [u.a.]: Herder, 1993.
Cita MLA (8th ed.)Feldmann, Christian. Friedrich Spee: Christian Feldmann. Herder, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.