Helfer, M. Archivmaterialien zu Monika Helfer, 1947-.
Chicago Style (17th ed.) CitationHelfer, Monika. Archivmaterialien Zu Monika Helfer, 1947-.
MLA (9th ed.) CitationHelfer, Monika. Archivmaterialien Zu Monika Helfer, 1947-.
Warning: These citations may not always be 100% accurate.