Williamson, J. (1994). Estimating equilibrium exchange rates: John Williamson. Institute for International Economics.
Chicago-referens (17:e uppl.)Williamson, John. Estimating Equilibrium Exchange Rates: John Williamson. Washington: Institute for International Economics, 1994.
MLA-referens (9:e uppl.)Williamson, John. Estimating Equilibrium Exchange Rates: John Williamson. Institute for International Economics, 1994.