Healey, J.F. <br/><br/>
The essential of statistics:  A tool for social research 
Healey, J.F. 
 - 4th. 
 - Boston:  Cengage,  2016. 
 - xxvii, 452p.  Index, appendices, glossary 
<br/><br/><label>ISBN: </label>978-1-305-09383-6 
<br/><br/><label>Subjects--Topical Terms: </label>