SAGE quantitative research methods / 
edited by W. Paul Vogt. 
 - 1st  ed. 
 - London :  SAGE,  2011. 
 - 4 vols. 
<br/><br/><label>ISBN: </label>1848606999 (se of 4 v.) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods.<br/>Social sciences--Research--Methodology.