APA Style

THALER, R, H., R.Sunstein, C. (2009). Nudge : Improving Decisions About Health, Wealth, and Happiness (ed. 1). New York: Prentice Hall.

MLA Style

THALER, Richard, H., R.Sunstein, Cass. "Nudge : Improving Decisions About Health, Wealth, and Happiness". ed. 1 New York: Prentice Hall, 2009. Text.