APA (7th ed.) Citation

Humboldt, A. v. Cosmos: A Sketch of the Physical Description of the Universe, Vol. 1.

Chicago Style (17th ed.) Citation

Humboldt, Alexander von. Cosmos: A Sketch of the Physical Description of the Universe, Vol. 1.

MLA (9th ed.) Citation

Humboldt, Alexander von. Cosmos: A Sketch of the Physical Description of the Universe, Vol. 1.

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