Cita APA

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

Citación estilo Chicago

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

Cita MLA

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