APA (7th ed.) Citation

Pares, B. (1949). A history of Russia (5. ed., rev. and enl.). Knopf.

Chicago Style (17th ed.) Citation

Pares, Bernard. A History of Russia. 5. ed., rev. and enl. New York: Knopf, 1949.

MLA (9th ed.) Citation

Pares, Bernard. A History of Russia. 5. ed., rev. and enl. Knopf, 1949.