APA
Chirovsky N. L., . (1973). A history of the Russian Empire. New York: Philosophical Library.
Chicago
Chirovsky Nicholas L, . 1973. A history of the Russian Empire. New York: Philosophical Library.
Harvard
Chirovsky N. L., . (1973). A history of the Russian Empire. New York: Philosophical Library.
MLA
Chirovsky Nicholas L, . A history of the Russian Empire. New York: Philosophical Library. 1973.