Herstein, I.N <br/><br/>
Topics in Algebra / 
by I.N. Herstein 
 - 2nd Ed. 
 - Singapore:  John Wiley and  Sons,  1964 
 - p.388 
<br/><br/><label>ISBN: </label>997151253X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Algebra
<br/><br/><label>Dewey Class. No.: </label>512  / HER-T2