Brinkerhoff R O <br/><br/>
Productivity measurement : A guide for managers and evaluators 
Brinkerhoff R O; Dressler D E 
 - London London  London London, Sage Publication  1990 
 - 127p 
<br/><br/><label>ISBN: </label>0-8309-31514-4 
<br/><br/><label>Source: </label>Textbook