APA (7th ed.) Citation

Voltaire. (2011). Voltaire's Romances, Complete in One Volume. Project Gutenberg.

Chicago Style (17th ed.) Citation

Voltaire. Voltaire's Romances, Complete in One Volume. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Voltaire. Voltaire's Romances, Complete in One Volume. Project Gutenberg, 2011.

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