Barratt Brown, M. (1974). The economics of imperialism. Penguin Education.
芝加哥风格引文Barratt Brown, Michael. The Economics of Imperialism. Harmondsworth: Penguin Education, 1974.
MLA引文Barratt Brown, Michael. The Economics of Imperialism. Penguin Education, 1974.
警告：这些引文格式不一定是100％准确.