APA (7th ed.) Citation

Humboldt, A. v., Bonpland, A., & Ross, T. (2004). Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 - Volume 2. Project Gutenberg.

Chicago Style (17th ed.) Citation

Humboldt, Alexander von, Aimé Bonpland, and Thomasina Ross. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 - Volume 2. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Humboldt, Alexander von, et al. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 - Volume 2. Project Gutenberg, 2004.

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