Helmes, G. Archivmaterialien zu Günter Helmes, 1954-.
Chicago Style (17th ed.) CitationHelmes, Günter. Archivmaterialien Zu Günter Helmes, 1954-.
MLA (9th ed.) CitationHelmes, Günter. Archivmaterialien Zu Günter Helmes, 1954-.
Warning: These citations may not always be 100% accurate.