Παραπομπή APA

Underhill, P. (1999). Why we buy: The science of shopping. Simon & Schuster.

Παραπομπή Chicago Style

Underhill, Paco. Why We Buy: The Science of Shopping. New York: Simon & Schuster, 1999.

Παραπομπή MLA

Underhill, Paco. Why We Buy: The Science of Shopping. Simon & Schuster, 1999.