Christensen C R <br/><br/>
Business policy:text and cases 
Christensen C R; Andrews K R And Others 
 - 6 
 - USA  USA, Irwin  1987 
 - 940p 
<br/><br/><label>ISBN: </label>0-256-03358-7 
<br/><br/><label>Source: </label>Textbook