Husain, Taqdir. <br/><br/>
Introduction to Topological Groups /  

 - 1st ed /  
 - London :   W.B. Saunders Company. 
 - p.218 :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topology
<br/><br/><label>Dewey Class. No.: </label>B316  / K6T;4