Ragaller, H. (1963). Bertolt Brecht - Caspar Neher.
Cita Chicago (17th ed.)Ragaller, Heinrich. Bertolt Brecht - Caspar Neher. Darmstadt, 1963.
Cita MLA (8th ed.)Ragaller, Heinrich. Bertolt Brecht - Caspar Neher. 1963.
Atenció: Aquestes cites poden no estar 100% correctes.