Fritsch, W. (1989). Steinbruch. Suhrkamp.
Cita Chicago (17th ed.)Fritsch, Werner. Steinbruch. Frankfurt a.M.: Suhrkamp, 1989.
Cita MLA (8th ed.)Fritsch, Werner. Steinbruch. Suhrkamp, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)