APA引文

van Bergeijk, P. A. G. (2011). Gravity Model in International Trade: Advances and Applications. Cambridge University Press.

Chicago Edition Citation

van Bergeijk, Peter A. G. Gravity Model in International Trade: Advances and Applications. Cambridge University Press, 2011.

MLA引文

van Bergeijk, Peter A. G. Gravity Model in International Trade: Advances and Applications. Cambridge University Press, 2011.

警告：這些引文格式不一定是100％准確.