APA (7th ed.) Citation

Voltaire & Besterman, T. (1963). Select letters of Voltaire. Nelson.

Chicago Style (17th ed.) Citation

Voltaire and Theodore Besterman. Select Letters of Voltaire. London: Nelson, 1963.

MLA (8th ed.) Citation

Voltaire and Theodore Besterman. Select Letters of Voltaire. Nelson, 1963.

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