Wiersma, William. <br/><br/>
Research methods in education : An introduction / 
William Wiersma 
 - 5th ed. 
 - London :  Allyn and Bacon,  1991 
 - 443 p. :  ill 
<br/><br/><label>ISBN: </label>0205137938 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.
<br/><br/><label>LC Class. No.: </label>LB1028  / W517