Silverstein, B. (2007). Best practices: Motivating employees. HarperCollins.
Cita Chicago (17th ed.)Silverstein, Barry. Best Practices: Motivating Employees. New York, NY: HarperCollins, 2007.
Cita MLA (8th ed.)Silverstein, Barry. Best Practices: Motivating Employees. HarperCollins, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.