James A. Rehg & Glenn J. Sartori - <br/><br/>
Programmable Logic Controllers 

 - 2nd ed 
 -   Pearson Prentice Hall  ©2009 
<br/><br/><label>ISBN: </label>9780135048818  413.5413.5 
<br/><br/><label>Dewey Class. No.: </label>629.89/REH