Barratt Brown, M. (1974). The economics of imperialism. Penguin Education.
Lua i Stíl Chicago (17ú heag.)Barratt Brown, Michael. The Economics of Imperialism. Harmondsworth: Penguin Education, 1974.
Lua MLA (8ú heag.)Barratt Brown, Michael. The Economics of Imperialism. Penguin Education, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.