APA (7th ed.) Citation

Le Bon, G. (1990). The crowd. Project Gutenberg.

Chicago Style (17th ed.) Citation

Le Bon, Gustave. The Crowd. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

Le Bon, Gustave. The Crowd. Project Gutenberg, 1990.

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