Charles C M <br/><br/>
Introduction to educational research 

 - Boston, USA  Pearson Education  2004 
 - xxiv,392p. 
<br/><br/><label>ISBN: </label>0-536-82446-0 
<br/><br/><label>Source: </label>Reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research methods