Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.