Gay, L. R. <br/><br/>
Educational Research   Compotencies for analysis and applications.  [Book] 

 - 7th 
 - New Jersy  Merrill prentice hall  2003 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>0130994634 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational Research: Compotencies for analysis and applications