Groeg, O. J. (1980). Who's who in Germany: A bibliographical dictionary containing about 12000 biographies of prominent people in and of Germany and 2400 organizations (7th Edition.). Who's Who - Book & Publishing.
Chicago-Zitierstil (17. Ausg.)Groeg, Otto J. Who's Who in Germany: A Bibliographical Dictionary Containing About 12000 Biographies of Prominent People in and of Germany and 2400 Organizations. 7th Edition. Wörthsee bei München: Who's Who - Book & Publishing, 1980.
MLA-Zitierstil (9. Ausg.)Groeg, Otto J. Who's Who in Germany: A Bibliographical Dictionary Containing About 12000 Biographies of Prominent People in and of Germany and 2400 Organizations. 7th Edition. Who's Who - Book & Publishing, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.