APA引文

Freeman, C. (1990). The Economics of innovation. E. Elgar.

Chicago Style (17th ed.) Citation

Freeman, Christopher. The Economics of Innovation. Aldershot, Hants, England: E. Elgar, 1990.

MLA引文

Freeman, Christopher. The Economics of Innovation. E. Elgar, 1990.

警告：這些引文格式不一定是100％准確.