Groeg, O. J. (1980). Who's who in Germany: A biographical encyclopedia of the international red series containing biographies of living prominent personalities selected for this edition and listing the most important organizations (7th ed.). Who's Who Book & Publishing.
MLA CitationGroeg, Otto J. Who's Who in Germany: A Biographical Encyclopedia of the International Red Series Containing Biographies of Living Prominent Personalities Selected for This Edition and Listing the Most Important Organizations. 7th ed. Who's Who Book & Publishing, 1980.
Warning: These citations have been automatically generated and may not always be 100% accurate..