Leach, Chris. <br/><br/>
Introduction to statistics :  a nonparametric approach for the social sciences / 
Chris Leach 
 - Chichester :  John Wiley & Sons,  1979 
 - xv, 339 p. :  ill. ;  24 cm 
<br/><br/> Includes index 
<br/><br/>Bibliography : p. 324-326 
<br/><br/><label>ISBN: </label>0471997420 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics<br/>Nonparametric statistics<br/>Social sciences--Statistical methods