APA (7th ed.) Zitazioa
National Bureau of Economic Research, ebrary, Inc, & Feenstra, R. C. (1997). The effects of U.S. trade protection and promotion policies. University of Chicago Press.
Chicago Style (17th ed.) Zitazioa
National Bureau of Economic Research, Inc ebrary, eta Robert C. Feenstra. The Effects of U.S. Trade Protection and Promotion Policies. Chicago: University of Chicago Press, 1997.
MLA (9th ed.) Zitazioa
National Bureau of Economic Research, et al. The Effects of U.S. Trade Protection and Promotion Policies. University of Chicago Press, 1997.
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