APA (7th ed.) Citation

Humboldt, W. v., & Flitner, A. (1960). Werke. J.G. Cotta.

Chicago Style (17th ed.) Citation

Humboldt, Wilhelm von, and Andreas Flitner. Werke. Stuttgart: J.G. Cotta, 1960.

MLA (9th ed.) Citation

Humboldt, Wilhelm von, and Andreas Flitner. Werke. J.G. Cotta, 1960.