APA (7th ed.) Citation

Richter, P. E., & Ricardo, I. (1980). Voltaire. Twayne Publishers.

Chicago Style (17th ed.) Citation

Richter, Peyton E., and Ilona Ricardo. Voltaire. Boston: Twayne Publishers, 1980.

MLA (9th ed.) Citation

Richter, Peyton E., and Ilona Ricardo. Voltaire. Twayne Publishers, 1980.

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