Happel, O. (2019). Archivmaterialien zu Otto Happel, 1866-1932.
Chicago Style (17th ed.) CitationHappel, Otto. Archivmaterialien Zu Otto Happel, 1866-1932. 2019.
MLA (9th ed.) CitationHappel, Otto. Archivmaterialien Zu Otto Happel, 1866-1932. 2019.
Warning: These citations may not always be 100% accurate.