Alkin, Marvin C. <br/><br/>
Encyclopedia of educational research.  Volume 3  Scal to year/ 
edited by Marvin C. Alkin. 
 - Sixth edition. 
 - New York :  Macmillan ;  c1992. 
 - [1125-1606] pages :  illustrations, maps ;  29 cm 
<br/><br/>Includes bibliographical references and index.