APA (7th ed.) Citation

Riker, T. W. (1971). The making of Roumania. Arno Press.

Chicago Style (17th ed.) Citation

Riker, T. W. The Making of Roumania. New York: Arno Press, 1971.

MLA (9th ed.) Citation

Riker, T. W. The Making of Roumania. Arno Press, 1971.