APA (7th ed.) Citation

Audubon, M. R., & Elliott, C. (2012). Audubon and his Journals, Vol. 2. Project Gutenberg.

Chicago Style (17th ed.) Citation

Audubon, Maria R., and Coues Elliott. Audubon and His Journals, Vol. 2. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Audubon, Maria R., and Coues Elliott. Audubon and His Journals, Vol. 2. Project Gutenberg, 2012.

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