Nagrath, I.J. & Gopal, M. <br/><br/>
Control systems engineering 

 - 5th ed 
 - New Age International publ, New Delhi  2007 
 - xiii,895 
<br/><br/><label>ISBN: </label>978-81-224-2008-1 
<br/><br/><label>Dewey Class. No.: </label>621.3811 Nag/Gop