APA (7th ed.) Citation

Frei, N., & Hayes, P. (2011). The German foreign office and the past. Bulletin of the German Historical Institute.

Chicago Style (17th ed.) Citation

Frei, Norbert, and Peter Hayes. "The German Foreign Office and the Past." Bulletin of the German Historical Institute 2011.

MLA (8th ed.) Citation

Frei, Norbert, and Peter Hayes. "The German Foreign Office and the Past." Bulletin of the German Historical Institute, 2011.