APA (7th ed.) Citation

Flude, K., & Herbert, P. (1990). The Citisights guide to London: Ten walks through London's past. Virgin.

Chicago Style (17th ed.) Citation

Flude, Kevin, and Paul Herbert. The Citisights Guide to London: Ten Walks Through London's Past. London: Virgin, 1990.

MLA (8th ed.) Citation

Flude, Kevin, and Paul Herbert. The Citisights Guide to London: Ten Walks Through London's Past. Virgin, 1990.

Warning: These citations may not always be 100% accurate.