APA (7th ed.) Citation

Carr, W. (1991). A History of Germany: 1815-1990 (4th ed.). Edward Arnold.

Chicago Style (17th ed.) Citation

Carr, William. A History of Germany: 1815-1990. 4th ed. London [etc.]: Edward Arnold, 1991.

MLA (9th ed.) Citation

Carr, William. A History of Germany: 1815-1990. 4th ed. Edward Arnold, 1991.