Walkenbach, John. <br/><br/>
Excel 2010 formulas/ 
John Walkenbach. 
 - Canada:  Wiley Publishing,  c2010. 
 - xxiii, 787 pages;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>978-0-470-47536-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microsoft excel (Computer file)<br/>Electronic spreadsheets.
<br/><br/><label>Dewey Class. No.: </label>DC 005.54  / W15