APA-viite

Krugman, P. (1991). Trade with Japan has the opened wider? Chicago: The University of Chicago Press.

Chicago-tyylinen lähdeviittaus

Krugman, Paul. Trade With Japan Has the Opened Wider? Chicago: The University of Chicago Press, 1991.

MLA-viite

Krugman, Paul. Trade With Japan Has the Opened Wider? Chicago: The University of Chicago Press, 1991.

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