APA (7th ed.) Citation

Le Bon, G. (1897). The crowd: A study of the popular mind (2d ed.). T.F. Unwin.

Chicago Style (17th ed.) Citation

Le Bon, Gustave. The Crowd: A Study of the Popular Mind. 2d ed. London: T.F. Unwin, 1897.

MLA (9th ed.) Citation

Le Bon, Gustave. The Crowd: A Study of the Popular Mind. 2d ed. T.F. Unwin, 1897.