Keen, J. M. (2011). Making technology investments profitable: ROI road map from business case to value realization (2nd ed.). Wiley.
Citace podle Chicago (17th ed.)Keen, Jack M. Making Technology Investments Profitable: ROI Road Map from Business Case to Value Realization. 2nd ed. Hoboken, N.J.: Wiley, 2011.
Citace podle MLA (9th ed.)Keen, Jack M. Making Technology Investments Profitable: ROI Road Map from Business Case to Value Realization. 2nd ed. Wiley, 2011.
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