Sipsep, Michael. <br/><br/>
Introduction to  the Theory of Computation. 

 - 3rd. Edn. 
 - New Delhi  Cengage Learning  2019 
 - xxii;458p. 
<br/><br/><label>ISBN: </label>9788131525296  Rs. 625.00 
<br/><br/><label>Dewey Class. No.: </label>511.3