Ary, Donald. <br/><br/>
Introduction to research in education / 
Donald Ary, Lucy Cheser Jacobs, Asghar Razavieh. 
 - 4th ed. 
 - Fort Worth :  Holt, Rinehart, and Winston,  c1990. 
 - xiv, 536 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0030324629 9780030324628 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.