Dyfyniad APA

Venables, A., & Limao, N. (1999). Infrastructure, Geographical Disadvantage, and Transport Costs. World Bank.

Dyfyniad Arddull Chicago

Venables, A., and N. Limao. Infrastructure, Geographical Disadvantage, and Transport Costs. World Bank, 1999.

Dyfyniad MLA

Venables, A., and N. Limao. Infrastructure, Geographical Disadvantage, and Transport Costs. World Bank, 1999.

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