Cita APA (7th ed.)

Cairns, J. C. The Nineteenth Century: 1815-1914.

Cita Chicago (17th ed.)

Cairns, John C. The Nineteenth Century: 1815-1914.

Cita MLA (8th ed.)

Cairns, John C. The Nineteenth Century: 1815-1914.

Atenció: Aquestes cites poden no estar 100% correctes.