Gibson, C. R. (1971). Foreign trade in the economic of development of small nations: The case of Ecuador. New York: Praeger Publishers.
Chicago-tyylinen lähdeviittausGibson, Charles R. Foreign Trade in the Economic of Development of Small Nations: The Case of Ecuador. New York: Praeger Publishers, 1971.
MLA-viiteGibson, Charles R. Foreign Trade in the Economic of Development of Small Nations: The Case of Ecuador. New York: Praeger Publishers, 1971.
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