APA (7th ed.) Citation

Helmers, S. A. (2013). Microsoft Visio 2013 step by step. Microsoft Press.

Chicago Style (17th ed.) Citation

Helmers, Scott A. Microsoft Visio 2013 Step by Step. Redmond, Wash.: Microsoft Press, 2013.

MLA (8th ed.) Citation

Helmers, Scott A. Microsoft Visio 2013 Step by Step. Microsoft Press, 2013.