APA (7th ed.) Citation

Voltaire, Leigh, O. H. G., Fleming, W. F., Smollett, T., & Morley, J. (2011). A Philosophical Dictionary, Volume 2. Project Gutenberg.

Chicago Style (17th ed.) Citation

Voltaire, Oliver Herbrand Gordon Leigh, William F. Fleming, T. Smollett, and John Morley. A Philosophical Dictionary, Volume 2. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Voltaire, et al. A Philosophical Dictionary, Volume 2. Project Gutenberg, 2011.

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