APA (7th ed.) Citation

Werfel, F. (1924). Verdi: Roman der Oper. Zsolnay.

Chicago Style (17th ed.) Citation

Werfel, Franz. Verdi: Roman Der Oper. Berlin: Zsolnay, 1924.

MLA (8th ed.) Citation

Werfel, Franz. Verdi: Roman Der Oper. Zsolnay, 1924.

Warning: These citations may not always be 100% accurate.