Introduction to research in education / 
Donald Ary ... [and others]. 
 - 7th ed. 
 - xviii, 670 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>0534555373 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education --Research.
<br/><br/><label>LC Class. No.: </label>LB1028   / .I57 2006