Punch, Keith F. <br/><br/>
Introduction to research methods in education / 
Keith F. Punch. 
 - 1st  ed. 
 - London :  Sage,  2009. 
 - xii, 380  p. 
<br/><br/><label>ISBN: </label>1847870186 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research--Methodology.