APA (7th ed.) Citation

Littlehales, N. (2016). Sleep. Penguin Life.

Chicago Style (17th ed.) Citation

Littlehales, Nick. Sleep. London: Penguin Life, 2016.

MLA (9th ed.) Citation

Littlehales, Nick. Sleep. Penguin Life, 2016.

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