Holland, W. W. (2013). Microsoft Office 2013 digital classroom. Wiley.
Lua i Stíl Chicago (17ú heag.)Holland, Walter W. Microsoft Office 2013 Digital Classroom. Indianapolis, Indiana: Wiley, 2013.
Lua MLA (9ú heag.)Holland, Walter W. Microsoft Office 2013 Digital Classroom. Wiley, 2013.
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