Cita APA (7a ed.)

Bergeijk, P. A. G. v., & Brakman, S. (2010). The gravity model in international trade: Advances and applications. Cambridge University Press.

Cita Chicago Style (17a ed.)

Bergeijk, Peter A. G. van, y Steven Brakman. The Gravity Model in International Trade: Advances and Applications. Cambridge ; New York: Cambridge University Press, 2010.

Cita MLA (8a ed.)

Bergeijk, Peter A. G. van, y Steven Brakman. The Gravity Model in International Trade: Advances and Applications. Cambridge University Press, 2010.