APA (7th ed.) Citation

Helpman, E., & Helpman, E. (1994). International trade and trade policy. MIT Press.

Chicago Style (17th ed.) Citation

Helpman, Elhanan, and Elhanan;Razin Helpman. International Trade and Trade Policy. MIT Press, 1994.

MLA (9th ed.) Citation

Helpman, Elhanan, and Elhanan;Razin Helpman. International Trade and Trade Policy. MIT Press, 1994.

Warning: These citations may not always be 100% accurate.