Enderton, Herbert B. <br/><br/>
A mathematical introduction to logic / 
Herbert B. Enderton. 
 - 2nd ed. 
 - [S.l.] :  Academic Press,  2000. 
 - 1 v. (unpaged) 
<br/><br/><label>ISBN: </label>8131201910 9788131201916 
<br/><br/><label>Dewey Class. No.: </label>515.3