APA (7th ed.) Citation

Mackay, C. (2008). Memoirs of Extraordinary Popular Delusions and the Madness of Crowds. Project Gutenberg.

Chicago Style (17th ed.) Citation

Mackay, Charles. Memoirs of Extraordinary Popular Delusions and the Madness of Crowds. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Mackay, Charles. Memoirs of Extraordinary Popular Delusions and the Madness of Crowds. Project Gutenberg, 2008.

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