APA-referens (7:e uppl.)

Grossman, G. M., & Helpman, E. (2002). Interest groups and trade policy. Princeton University Press.

Chicago-referens (17:e uppl.)

Grossman, Gene M., och Elhanan Helpman. Interest Groups and Trade Policy. Princeton, N.J: Princeton University Press, 2002.

MLA-referens (9:e uppl.)

Grossman, Gene M., och Elhanan Helpman. Interest Groups and Trade Policy. Princeton University Press, 2002.