Borg, Walter R. <br/><br/>
Educational research :  an introduction. / 
Walter R. Borg and Meredith Damien Gall. 
 - 5th. 
 - New York :  Longman,  1989. 
 - xxxii, 939p. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0801303346 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.<br/>Education--Research.