Shapiro, Carl., <br/><br/>
Information rules : a strategic guide to the network economy / 
Carl Shapiro, Hal R. Varian. 
 - Boston, Massachusetts :  Harvard Business School Press,  1999 
 - x, 352 pages :  illustrations ;  24 cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>087584863X 9780875848631 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information technology--Economic aspects<br/>Information society