APA (7th ed.) Citation

Gawthrop, J., & Williams, C. (2008). The rough guide to Berlin. Rough Guides.

Chicago Style (17th ed.) Citation

Gawthrop, John, and Christian Williams. The Rough Guide to Berlin. New York ; London: Rough Guides, 2008.

MLA (8th ed.) Citation

Gawthrop, John, and Christian Williams. The Rough Guide to Berlin. Rough Guides, 2008.