APA (7th ed.) Citation

(1978). Briefe 1901–1963. De Gruyter. https://doi.org/10.1515/9783110912524

Chicago Style (17th ed.) Citation

Briefe 1901–1963. Berlin/Boston: De Gruyter, 1978. https://doi.org/10.1515/9783110912524.

MLA (9th ed.) Citation

Briefe 1901–1963. De Gruyter, 1978. https://doi.org/10.1515/9783110912524.

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