APA引文

Freeman, C. (1974). The economics of Industrial Innovation. England: Penguin Books.

Trích dẫn kiểu Chicago

Freeman, Christopher. The Economics of Industrial Innovation. England: Penguin Books, 1974.

MLA引文

Freeman, Christopher. The Economics of Industrial Innovation. England: Penguin Books, 1974.

警告：这些引文格式不一定是100％准确.