Gall, Meredith D. <br/><br/>
Educational research :  an introduction / 
Meredith D. Gall, Walter R. Borg, Joyce P. Gall. 
 - 7th ed. 
 - Boston :  Pearson Education , Inc,  c2003. 
 - xxxi, 656 p. :  ill. ;  24 cm.  
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0321081897 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.<br/>Education--Research--United States.
<br/><br/><label>Subjects--Index Terms: </label>Education  Research