APA (7th ed.) Citation

Martin, E. D. (2012). The Behavior of Crowds A Psychological Study. Project Gutenberg.

Chicago Style (17th ed.) Citation

Martin, Everett Dean. The Behavior of Crowds A Psychological Study. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Martin, Everett Dean. The Behavior of Crowds A Psychological Study. Project Gutenberg, 2012.

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