Cita APA (7a ed.)

Le Bon, G., & Widener, A. (1979). Gustave Le Bon: The man and his works. Liberty Press.

Cita Chicago Style (17a ed.)

Le Bon, Gustave, y Alice Widener. Gustave Le Bon: The Man and His Works. Indianapolis: Liberty Press, 1979.

Cita MLA (9a ed.)

Le Bon, Gustave, y Alice Widener. Gustave Le Bon: The Man and His Works. Liberty Press, 1979.