APA (7th ed.) Citation

Darwin, C. (2004). Insectivorous Plants. Project Gutenberg.

Chicago Style (17th ed.) Citation

Darwin, Charles. Insectivorous Plants. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Darwin, Charles. Insectivorous Plants. Project Gutenberg, 2004.

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