APA (7th ed.) Citation

Fforde, J., & Lee, J. (2009). Shades of grey: A novel. Penguin Audio.

Chicago Style (17th ed.) Citation

Fforde, Jasper, and John Lee. Shades of Grey: A Novel. [New York]: Penguin Audio, 2009.

MLA (8th ed.) Citation

Fforde, Jasper, and John Lee. Shades of Grey: A Novel. Penguin Audio, 2009.

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