APA (7th ed.) Citation

Langhorne, R. (1981). The collapse of the concert of Europe : international politics, 1890-1914 / Richard Langhorne: International politics, 1890-1914. Macmillan.

Chicago Style (17th ed.) Citation

Langhorne, Richard. The Collapse of the Concert of Europe : International Politics, 1890-1914 / Richard Langhorne: International Politics, 1890-1914. London: Macmillan, 1981.

MLA (9th ed.) Citation

Langhorne, Richard. The Collapse of the Concert of Europe : International Politics, 1890-1914 / Richard Langhorne: International Politics, 1890-1914. Macmillan, 1981.

Warning: These citations may not always be 100% accurate.