Royden, H.L., <br/><br/>
Real Analysis  Textual Documents 
By H.L.Royden & P.M.Fitzpatrick 
 - 2nd ed. 
 - UP  Pearson Education Pvt.Ltd  2015 
 - pg505:  23cm. 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Real Analysis G- Mathematics 
<br/><br/><label>Dewey Class. No.: </label>515.8