Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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