Cita APA

Humphreys, R., & Bidder, S. (2001). The rough guide to London (4th ed.). London: Rough Guides.

Chicago Style Citation

Humphreys, Rob, i Sean Bidder. The Rough Guide to London. 4th ed. London: Rough Guides, 2001.

Cita MLA

Humphreys, Rob, i Sean Bidder. The Rough Guide to London. 4th ed. London: Rough Guides, 2001.

Atenció: Aquestes cites poden no estar 100% correctes.