APA引文

Samuelson, P. A. (1972). International economic relations. London: MacMillan.

Trích dẫn kiểu Chicago

Samuelson, Paul A. International Economic Relations. London: MacMillan, 1972.

MLA引文

Samuelson, Paul A. International Economic Relations. London: MacMillan, 1972.

警告：这些引文格式不一定是100％准确.