APA (7th ed.) Citation

Churchill, W., Graf, H., Czernin, F. J., & Zell, C. (1928). Die Weltkrisis 1916/18. Amalthea-Verlag.

Chicago Style (17th ed.) Citation

Churchill, Winston, Hans Graf, Franz Josef Czernin, and Carl Zell. Die Weltkrisis 1916/18. Zürich [etc.]: Amalthea-Verlag, 1928.

MLA (9th ed.) Citation

Churchill, Winston, et al. Die Weltkrisis 1916/18. Amalthea-Verlag, 1928.