APA (7th ed.) Zitazioa
ebrary, Inc, Itō, T., & Krueger, A. O. (1993). Trade and protectionism. University of Chicago Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, Takatoshi Itō, eta Anne O. Krueger. Trade and Protectionism. Chicago: University of Chicago Press, 1993.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Trade and Protectionism. University of Chicago Press, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.