Bale, M. D. (1978). Trade restrictions and international price instability. World Bank.
Lua i Stíl Chicago (17ú heag.)Bale, Malcolm D. Trade Restrictions and International Price Instability. Washington, D.C: World Bank, 1978.
Lua MLA (9ú heag.)Bale, Malcolm D. Trade Restrictions and International Price Instability. World Bank, 1978.
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