APA (7th ed.) Citation

Langhorne, R. (1981). The collapse of the Concert of Europe: International politics, 1890-1914. St. Martin's Press.

Chicago Style (17th ed.) Citation

Langhorne, Richard. The Collapse of the Concert of Europe: International Politics, 1890-1914. New York, N.Y.: St. Martin's Press, 1981.

MLA (9th ed.) Citation

Langhorne, Richard. The Collapse of the Concert of Europe: International Politics, 1890-1914. St. Martin's Press, 1981.