Niven, I.  . <br/><br/>
Maxima and minima without calculus /  
by I. Nven. 
 - USA :   Mathematical Association of America ,   1981 
 - 303p ;  
<br/><br/><label>ISBN: </label>0-8838-306-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>B38:7  / M1