Ary, Donald, <br/><br/>
Introduction to research in education / 
Donald Ary, Lucy Cheser Jacobs, Christine K. Sorensen, David A. Walker. 
 - Edition 9. 
 - xx, 700 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>9781133596745 (hardcover)  RM737.76 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.