APA (7th ed.) Citation

Keller, G., & Köster, A. (1921). Gedichte. Insel-Verlag.

Chicago Style (17th ed.) Citation

Keller, Gottfried, and Albert Köster. Gedichte. Leipzig: Insel-Verlag, 1921.

MLA (8th ed.) Citation

Keller, Gottfried, and Albert Köster. Gedichte. Insel-Verlag, 1921.

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