APA citiranje

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

Παραπομπή Chicago Style

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

MLA citiranje

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