Charles, C. M. <br/><br/>
Introduction to educational research / 
C.M. Charles, Craig A. Mertler. 
 - 4th ed. 
 - Boston :  Allyn and Bacon,  2002. 
 - xxiii, 392 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0321081757 (alk. paper)  RM329.64 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.