Ord, T. (2008). The Secret Science of Price and Volume. Random House.
Cita Chicago (17th ed.)Ord, Timothy. The Secret Science of Price and Volume. New York: Random House, 2008.
Cita MLA (9th ed.)Ord, Timothy. The Secret Science of Price and Volume. Random House, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.