APA引文

Elhansn, H., & Krugman, P. R. (1999). Trade Policy and Market Structure. MIT Press.

芝加哥风格引文

Elhansn, Helpman, 与 Paul R. Krugman. Trade Policy and Market Structure. London: MIT Press, 1999.

MLA引文

Elhansn, Helpman, 与 Paul R. Krugman. Trade Policy and Market Structure. MIT Press, 1999.

警告：这些引文格式不一定是100％准确.