Stillwell, John <br/><br/>
Sources of hyperbolic geometry   
by John stillwell 
 - Providence  American Mathematical Society  1996 
 - ix, 153p. 
 - History of Mathematics  Vol.10 .
<br/><br/><label>ISBN: </label>0821809229 
<br/><br/><label>Dewey Class. No.: </label>516.9  / N96