MLA

Huffington, Arianna. The Sleep Revolution : Transforming Your Life, One Night At A Time. New York: Harmony Books, 2017.

APA

Huffington, A. (2017). The Sleep Revolution : transforming Your Life, One Night At A Time. New York: Harmony Books.

Chicago

Huffington, Arianna, The Sleep Revolution: Transforming Your Life, One Night At A Time. New York: Harmony Books, 2017.