Gravetter, Frederick J. <br/><br/>
Statistics for the behavioral sciences / 
Frederick J Gravetter, Larry B. Wallnau. 
 - 9th  ed. 
 - Australia :  Wadsworth, Cengage,  2013. 
 - xxi, 767  p. 
<br/><br/><label>ISBN: </label>1111839550 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods.<br/>Statistics--Problems, exercises, etc.