Cita APA (7th ed.)
Schiffman, S. (2002). Sales don't just happen: 26 proven strategies to increase sales in any market. Dearborn Financial Pub..
Cita Chicago (17th ed.)
Schiffman, Stephan. Sales Don't Just Happen: 26 Proven Strategies to Increase Sales in Any Market. Chicago, IL: Dearborn Financial Pub., 2002.
Cita MLA (9th ed.)
Schiffman, Stephan. Sales Don't Just Happen: 26 Proven Strategies to Increase Sales in Any Market. Dearborn Financial Pub., 2002.
Atenció: Aquestes cites poden no estar 100% correctes.