Miller, D. (2008). Business-focused IT and service excellence (2nd ed.). BCS.
Lua i Stíl Chicago (17ú heag.)Miller, David. Business-focused IT and Service Excellence. 2nd ed. Swindon: BCS, 2008.
Lua MLA (9ú heag.)Miller, David. Business-focused IT and Service Excellence. 2nd ed. BCS, 2008.
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