Cullen, S. (2009). The contract scorecard: Successful outsourcing by design. Ashgate Pub. Co. : Gower.
Chicago-čujuhus (17. p.)Cullen, Sara. The Contract Scorecard: Successful Outsourcing by Design. Burlington, VT: Ashgate Pub. Co. : Gower, 2009.
MLA-čujuhus (9. p.)Cullen, Sara. The Contract Scorecard: Successful Outsourcing by Design. Ashgate Pub. Co. : Gower, 2009.
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