APA
Tschuppik K., . (1930). The Empress Elizabeth of Austria. London: Constable & Co Ltd.
Chicago
Tschuppik Karl, . 1930. The Empress Elizabeth of Austria. London: Constable & Co Ltd.
Harvard
Tschuppik K., . (1930). The Empress Elizabeth of Austria. London: Constable & Co Ltd.
MLA
Tschuppik Karl, . The Empress Elizabeth of Austria. London: Constable & Co Ltd. 1930.
