Who's who in opera  an international biographical directory of singers, conductors, directors, designers, and administrators, also including profiles of 101 opera companies 
Maria F. Rich, editor. 
 - New York  Arno Press  1976. 
 - xxi, 684 p. 
<br/><br/><label>ISBN: </label>040506652X  65.00 
<br/><br/><label>LCCN: </label>75007963 /MN/r78 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Opera--Biography--Dictionaries.<br/>Opera--Directories.
<br/><br/><label>LC Class. No.: </label>ML102.O6  / W5 
<br/><br/><label>Dewey Class. No.: </label>782.1/092/2  B