APA
Berthelon M., Freund Caroline & World Bank. (2004). On the conservation of distance in international trade. Washigton: World Bank.
Chicago
Berthelon Matias, Freund Caroline and World Bank. 2004. On the conservation of distance in international trade. Washigton: World Bank.
Harvard
Berthelon M., Freund Caroline and World Bank. (2004). On the conservation of distance in international trade. Washigton: World Bank.
MLA
Berthelon Matias, Freund Caroline and World Bank. On the conservation of distance in international trade. Washigton: World Bank. 2004.
TextSeries: World Bank policy research working paper seriesPublication details: Washigton World Bank 2004Description: 32pISBN: 
Working Papers (Print)
