APA (7th ed.) Citation

George, S., Gundolf, F., & Boehringer, R. (1962). Briefwechsel. Küpper.

Chicago Style (17th ed.) Citation

George, Stefan, Friedrich Gundolf, and Robert Boehringer. Briefwechsel. München [u.a.]: Küpper, 1962.

MLA (8th ed.) Citation

George, Stefan, et al. Briefwechsel. Küpper, 1962.

Warning: These citations may not always be 100% accurate.