APA (7th ed.) Citation

Voltaire & Brooks, R. A. (1973). The selected letters of Voltaire. New York University Press.

Chicago Style (17th ed.) Citation

Voltaire and Richard A. Brooks. The Selected Letters of Voltaire. New York: New York University Press, 1973.

MLA (8th ed.) Citation

Voltaire and Richard A. Brooks. The Selected Letters of Voltaire. New York University Press, 1973.