Cullen, S. (2009). The contract scorecard: Successful outsourcing by design. Ashgate Pub. Co.
Chicago-Zitierstil (17. Ausg.)Cullen, Sara. The Contract Scorecard: Successful Outsourcing by Design. Burlington, VT: Ashgate Pub. Co, 2009.
MLA-Zitierstil (9. Ausg.)Cullen, Sara. The Contract Scorecard: Successful Outsourcing by Design. Ashgate Pub. Co, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.