Barratt Brown, M. (1974). The economics of imperialism. Penguin Education.
Chicago Style aipamenaBarratt Brown, Michael. The Economics of Imperialism. Harmondsworth: Penguin Education, 1974.
MLA aipamenaBarratt Brown, Michael. The Economics of Imperialism. Penguin Education, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.