Levin, Jack <br/><br/>
Elementary statistics in social research / 
Jack Levin, James Alan Fox and David R.Forde. 
 - 11th edition 
 - Singapore :  Pearson,  2010. 
 - 554 p. : ill. ; 24 cm. 
<br/><br/> Includes appendices, glossary and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods<br/>Statistics