APA引文

Salter, W. E. G. (1969). Productivity and technical change. Cambridge: Cambridge University Press.

Trích dẫn kiểu Chicago

Salter, W. E. G. Productivity and Technical Change. Cambridge: Cambridge University Press, 1969.

MLA引文

Salter, W. E. G. Productivity and Technical Change. Cambridge: Cambridge University Press, 1969.

警告：这些引文格式不一定是100％准确.