APA (7th ed.) Citation

Humboldt, A. v., & Sabine, E. (2011). Cosmos: Sketch of a physical description of the universe. Cambridge University Press.

Chicago Style (17th ed.) Citation

Humboldt, Alexander von, and Edward Sabine. Cosmos: Sketch of a Physical Description of the Universe. Cambridge: Cambridge University Press, 2011.

MLA (9th ed.) Citation

Humboldt, Alexander von, and Edward Sabine. Cosmos: Sketch of a Physical Description of the Universe. Cambridge University Press, 2011.