Johnson, Burke. <br/><br/>
Educational research :  quantitative, qualitative, and mixed approaches / 
Burke Johnson, Larry Christensen. 
 - 3rd ed. 
 - Los Angeles :  SAGE Publications,  2008. 
 - xxiv, 639 p. :  ill. (some col.) ;  27 cm. 
<br/><br/>Includes bibliographical references (p. 607-625) and index. 
<br/><br/><label>ISBN: </label>9781412954563 (hbk.)  RM252.08 1412954568 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education research.