APA (7th ed.) Citation

Landauer, G., Mauthner, F., & Delf, H. (1994). Briefwechsel: 1890 - 1919. Beck.

Chicago Style (17th ed.) Citation

Landauer, Gustav, Fritz Mauthner, and Hanna Delf. Briefwechsel: 1890 - 1919. München: Beck, 1994.

MLA (8th ed.) Citation

Landauer, Gustav, et al. Briefwechsel: 1890 - 1919. Beck, 1994.