Nielsen, J. U. (1995). International economics: The wealth of open nations. .McGraw-Hill Book Co.
Chicago (17e ed.) BronvermeldingNielsen, Jorgen Ulff-Moller. International Economics: The Wealth of Open Nations. London ; New York: .McGraw-Hill Book Co, 1995.
MLA (9e ed.) BronvermeldingNielsen, Jorgen Ulff-Moller. International Economics: The Wealth of Open Nations. .McGraw-Hill Book Co, 1995.