Measuring Trade Balances

References

Central Intelligence Agency. “The World Factbook.” Last modified October 31, 2013. https://www.cia.gov/library/publications/the-world-factbook/geos/gm.html.

U.S. Department of Commerce. “Bureau of Economic Analysis.” Last modified December 1, 2013. http://www.bea.gov/.

U.S. Department of Commerce. “United States Census Bureau.” http://www.census.gov/.