Gaya APA

Thales, R, H., Sunstein, C, R. (2009). Nudge: Improving Decisions About Health, Wealth, and Happiness . : PENGUIN.

Gaya MLA

Thales, Richard, H.., Sunstein, Cass, R.. "Nudge: Improving Decisions About Health, Wealth, and Happiness". : PENGUIN, 2009. Text.