APA (7th ed.) Citation

Willemsen, H., & Keller, C. (1880). Sylvester: Komische Oper in drei Akten (Libretto.). Bagel.

Chicago Style (17th ed.) Citation

Willemsen, Hugo, and C. Keller. Sylvester: Komische Oper in Drei Akten. Libretto. Düsseldorf: Bagel, 1880.

MLA (9th ed.) Citation

Willemsen, Hugo, and C. Keller. Sylvester: Komische Oper in Drei Akten. Libretto. Bagel, 1880.

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