Cita APA (7a ed.)

Helpman, E. (2011). Understanding global trade. Belknap Press of Harvard University Press.

Cita Chicago Style (17a ed.)

Helpman, Elhanan. Understanding Global Trade. Cambridge, Mass.: Belknap Press of Harvard University Press, 2011.

Cita MLA (9a ed.)

Helpman, Elhanan. Understanding Global Trade. Belknap Press of Harvard University Press, 2011.