Grossman, G. M., & Helpman, E. (2002). Interest groups and trade policy. Princeton University Press.
芝加哥风格引文Grossman, Gene M., 与 Elhanan Helpman. Interest Groups and Trade Policy. Princeton, N.J: Princeton University Press, 2002.
MLA引文Grossman, Gene M., 与 Elhanan Helpman. Interest Groups and Trade Policy. Princeton University Press, 2002.
警告：这些引文格式不一定是100％准确.