Levin, Jack. <br/><br/>
Elementary statistics in social research / 
Jack Levin, James Alan Fox, David R. Forde. 
 - 11th  ed. 
 - Boston :  Allyn & Bacon,  2010. 
 - xiv, 554  p. 
<br/><br/><label>ISBN: </label>0205570690 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods.<br/>Statistics.