APA (7th ed.) Citation

Thoreau, H. D. (2010). Walden. Project Gutenberg.

Chicago Style (17th ed.) Citation

Thoreau, Henry David. Walden. To be supplied: Project Gutenberg, 2010.

MLA (8th ed.) Citation

Thoreau, Henry David. Walden. Project Gutenberg, 2010.

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