APA (7th ed.) Citation

Walkenbach, J. (2007). Microsoft Office Excel 2007 Formulas. Wiley Publishing.

Chicago Style (17th ed.) Citation

Walkenbach, John. Microsoft Office Excel 2007 Formulas. Indianapolis: Wiley Publishing, 2007.

MLA (8th ed.) Citation

Walkenbach, John. Microsoft Office Excel 2007 Formulas. Wiley Publishing, 2007.