Johnson, Burke. <br/><br/>
Educational research :  quantitative, qualitative and mixed approaches / 
Burke Johnson, Larry B. Christensen. 
 - London :  SAGE,  2008. 
 - xxiv, 639  p. 
<br/><br/><label>ISBN: </label>1412954563 :  KES 5713.20 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.