Cita APA

Bridge, F. R., & Bullen, R. (1980). The great powers and the European states system: 1815 - 1914. Longman.

Citación estilo Chicago

Bridge, Francis R., y Roger Bullen. The Great Powers and the European States System: 1815 - 1914. London: Longman, 1980.

Cita MLA

Bridge, Francis R., y Roger Bullen. The Great Powers and the European States System: 1815 - 1914. Longman, 1980.