Preppernau, J., & Cox, J. (2010). Windows 7 Step by Step. Microsoft Press ; PHI Learning Pvt. Ltd..
Dyfyniad Arddull ChicagoPreppernau, Joan, and Joyce Cox. Windows 7 Step by Step. Redmond, Wash. : New Delhi: Microsoft Press ; PHI Learning Pvt. Ltd., 2010.
Dyfyniad MLAPreppernau, Joan, and Joyce Cox. Windows 7 Step by Step. Microsoft Press ; PHI Learning Pvt. Ltd., 2010.
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