Readings in reference group theory and research / 
edited by Herbert H. Hyman and Eleanor Singer 
 - New York :  Free Press,  1968 
 - xi, 509 p. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 10.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference groups
<br/><br/><label>Dewey Class. No.: </label>301.152