Fries, H. (1991). Abschied von Gott?: Heinrich Fries. Herder.
Cita Chicago (17th ed.)Fries, Heinrich. Abschied Von Gott?: Heinrich Fries. Freiburg [u.a.]: Herder, 1991.
Cita MLA (8th ed.)Fries, Heinrich. Abschied Von Gott?: Heinrich Fries. Herder, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.