APA
Balassa B. A., . (1977). A stages approach to comparative advantage. Washington, D.C: World Bank.
Chicago
Balassa Bela A, . 1977. A stages approach to comparative advantage. Washington, D.C: World Bank.
Harvard
Balassa B. A., . (1977). A stages approach to comparative advantage. Washington, D.C: World Bank.
MLA
Balassa Bela A, . A stages approach to comparative advantage. Washington, D.C: World Bank. 1977.