Cita APA (7th ed.)

Barratt Brown, M. (1974). The economics of imperialism. Penguin Education.

Cita Chicago (17th ed.)

Barratt Brown, Michael. The Economics of Imperialism. Harmondsworth: Penguin Education, 1974.

Cita MLA (8th ed.)

Barratt Brown, Michael. The Economics of Imperialism. Penguin Education, 1974.