Png Ivan, <br/><br/>
Managerial economics 
by Ivan Png 
 - 4th ed. 
 - New York  Routledge  2012 
 - 364P. 
<br/><br/><label>ISBN: </label>978-0-415-80949-8 
<br/><br/><label>Dewey Class. No.: </label>X:8  / Q2