Johnson, Burke, <br/><br/>
Educational research :  quantitative, qualitative, and mixed approaches / 
R. Burke Johnson, Larry Christensen. 
 - 5th ed. 
 - xxviii, 711 pages :  illustrations ;  27 cm 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781452244402 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education research.