Langley Gerald J <br/><br/>
Improvement guide:A practical approach to enchancing organisational performance 
Langley Gerald J And Others 
 - 2 
 - New Jersey  New Jersey, Jossey-Bass  2009 
 - xxi,490 
<br/><br/><label>ISBN: </label>978-0-470-19241-2 
<br/><br/><label>Source: </label>Textbook