APA (7th ed.) Citation

Varga, E., & Arnot, R. P. (1939). Two systems: Socialist economy and capitalist economy. International Publishers.

Chicago Style (17th ed.) Citation

Varga, Eugen, and Robert Page Arnot. Two Systems: Socialist Economy and Capitalist Economy. New York: International Publishers, 1939.

MLA (9th ed.) Citation

Varga, Eugen, and Robert Page Arnot. Two Systems: Socialist Economy and Capitalist Economy. International Publishers, 1939.