Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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