Phillips, J. J., Brantley, W., & Phillips, P. P. (2012). Project management ROI: A step-by-step guide for measuring the impact and ROI for projects. Wiley.
Chicago-čujuhus (17. p.)Phillips, Jack J., Wayne Brantley, juo Patricia Pulliam Phillips. Project Management ROI: A Step-by-step Guide for Measuring the Impact and ROI for Projects. Hoboken, N.J.: Wiley, 2012.
MLA-čujuhus (9. p.)Phillips, Jack J., et al. Project Management ROI: A Step-by-step Guide for Measuring the Impact and ROI for Projects. Wiley, 2012.
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