APA (7th ed.) Citation

Böhle, K., Oster, U. A., Gratton, C. A., & Widergren, P. R. (1998). A Short history of the German people. Inter Nationes.

Chicago Style (17th ed.) Citation

Böhle, Klaus, Uwe A. Oster, Carol A. Gratton, and Paul R. Widergren. A Short History of the German People. Bonn: Inter Nationes, 1998.

MLA (9th ed.) Citation

Böhle, Klaus, et al. A Short History of the German People. Inter Nationes, 1998.