APA (7th ed.) Citation

Underhill, P. (2009). Why we buy: The science of shopping (Updated and rev.). Simon & Schuster Pbks.

Chicago Style (17th ed.) Citation

Underhill, Paco. Why We Buy: The Science of Shopping. Updated and rev. New York: Simon & Schuster Pbks, 2009.

MLA (9th ed.) Citation

Underhill, Paco. Why We Buy: The Science of Shopping. Updated and rev. Simon & Schuster Pbks, 2009.