Styl cytowania APA

CURTIS D FRYE. (2013). Microsoft excel 2013 step by step. PHI Learning Pvt. Ltd.

Styl cytowania Chicago

CURTIS D FRYE. Microsoft Excel 2013 Step by Step. New Delhi: PHI Learning Pvt. Ltd, 2013.

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CURTIS D FRYE. Microsoft Excel 2013 Step by Step. PHI Learning Pvt. Ltd, 2013.