APA (7th ed.) Citation

Silone, I., David, G., & Mosbacher, E. (1948). Fontamara. Jonathan Cape.

Chicago Style (17th ed.) Citation

Silone, Ignazio, Gwenda David, and Eric Mosbacher. Fontamara. London: Jonathan Cape, 1948.

MLA (9th ed.) Citation

Silone, Ignazio, et al. Fontamara. Jonathan Cape, 1948.