APA (7th ed.) Citation

Langford, N. P. (2004). The Discovery of Yellowstone Park Journal of the Washburn Expedition to the Yellowstone and Firehole Rivers in the Year 1870. Project Gutenberg.

Chicago Style (17th ed.) Citation

Langford, Nathaniel Pitt. The Discovery of Yellowstone Park Journal of the Washburn Expedition to the Yellowstone and Firehole Rivers in the Year 1870. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Langford, Nathaniel Pitt. The Discovery of Yellowstone Park Journal of the Washburn Expedition to the Yellowstone and Firehole Rivers in the Year 1870. Project Gutenberg, 2004.

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