Cita APA (7a ed.)

Rüger, J. (2016). Heligoland: Britain, Germany, and the Struggle for the North Sea. Oxford University Press USA : OUP Oxford.

Cita Chicago Style (17a ed.)

Rüger, Jan. Heligoland: Britain, Germany, and the Struggle for the North Sea. [Place of publication not identified]: Oxford University Press USA : OUP Oxford, 2016.

Cita MLA (8a ed.)

Rüger, Jan. Heligoland: Britain, Germany, and the Struggle for the North Sea. Oxford University Press USA : OUP Oxford, 2016.