APA (7th ed.) Citation

Steiner, G., & Riemen, R. (2015). The idea of Europe. Overlook Duckworth.

Chicago Style (17th ed.) Citation

Steiner, George, and Rob Riemen. The Idea of Europe. New York ; London: Overlook Duckworth, 2015.

MLA (9th ed.) Citation

Steiner, George, and Rob Riemen. The Idea of Europe. Overlook Duckworth, 2015.