APA (7th ed.) Citation

Ovenden, M. (2013). London Underground by design / Mark Ovenden. Penguin Books.

Chicago Style (17th ed.) Citation

Ovenden, Mark. London Underground by Design / Mark Ovenden. London: Penguin Books, 2013.

MLA (9th ed.) Citation

Ovenden, Mark. London Underground by Design / Mark Ovenden. Penguin Books, 2013.

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