Cita APA (7a ed.)

Ulrich, D., & Ulrich, W. (2010). The why of work: How great leaders build abundant organizations that win. McGraw-Hill.

Cita Chicago Style (17a ed.)

Ulrich, Dave, y Wendy Ulrich. The Why of Work: How Great Leaders Build Abundant Organizations That Win. New York: McGraw-Hill, 2010.

Cita MLA (9a ed.)

Ulrich, Dave, y Wendy Ulrich. The Why of Work: How Great Leaders Build Abundant Organizations That Win. McGraw-Hill, 2010.