Course of pure mathematics 
Hardy, G. H. 
 - 10th ed., centenary ed.  
 - New York :  Cambridge University Press,  2008 
 - 509 p. :  ill. ;  23 cm. 
<br/><br/> Reissue of the 1952 edition. 
<br/><br/><label>ISBN: </label>9780521720557 (pbk.)