APA (7th ed.) Citation

Darwin, F. (2010). Rustic Sounds, and Other Studies in Literature and Natural History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Darwin, Francis. Rustic Sounds, and Other Studies in Literature and Natural History. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Darwin, Francis. Rustic Sounds, and Other Studies in Literature and Natural History. Project Gutenberg, 2010.

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