An introduction to formal languages and automata 
Linz, Peter. 
 - 6th ed. 
 -  Jones & Bartlett Learning,  2017 
 - 454 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-1-28407724-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Formal languages.
<br/><br/><label>Dewey Class. No.: </label>005.13 L762 2017