Ary, Donald. <br/><br/>
Introduction to research in education / 
Donald Ary ... [et al.]. 
 - 9th ed. 
 - Belmont, Calif. :  Wadsworth Cengage Learning,  2014 
 - xx, 700 p. :  ill. (some col.)   26 cm. 
<br/><br/> Previous ed.: 2010. 
<br/><br/><label>ISBN: </label>9781133939610 (pbk.);1133939619 (pbk.);9781133596745;1133596746 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>370.7