APA引文

Hippel, E. v. (1988). The sources of innovation. New York: Oxford University Press.

Trích dẫn kiểu Chicago

Hippel, Eric von. The Sources of Innovation. New York: Oxford University Press, 1988.

MLA引文

Hippel, Eric von. The Sources of Innovation. New York: Oxford University Press, 1988.

警告：這些引文格式不一定是100％准確.