Gravetter, J. Frederick <br/><br/>
Statistics for Behavioral Science: 

 - 7th ed. 
 - USA:  Thomson Wadsworth,  2007. 
 - 760p.:  ill.; 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780495095217 
<br/><br/><label>LC Class. No.: </label>BF39  / gra2007