Ridley, H. (1983). Images of imperial rule. Croom Helm.
Cita Chicago (17th ed.)Ridley, Hugh. Images of Imperial Rule. New York: Croom Helm, 1983.
Cita MLA (9th ed.)Ridley, Hugh. Images of Imperial Rule. Croom Helm, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.