APA (7th ed.) Citation

Hornby, N. (2006). A long way down. Penguin Books.

Chicago Style (17th ed.) Citation

Hornby, Nick. A Long Way Down. London [etc.]: Penguin Books, 2006.

MLA (9th ed.) Citation

Hornby, Nick. A Long Way Down. Penguin Books, 2006.

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