Gardner, C. (2000). The valuation of information technology: A guide for strategy development, valuation, and financial planning. Wiley.
Lua i Stíl Chicago (17ú heag.)Gardner, Christopher. The Valuation of Information Technology: A Guide for Strategy Development, Valuation, and Financial Planning. New York: Wiley, 2000.
Lua MLA (9ú heag.)Gardner, Christopher. The Valuation of Information Technology: A Guide for Strategy Development, Valuation, and Financial Planning. Wiley, 2000.
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