APA aipamena

Smith, M. B. (1990). The language of trade. Washington, D.C: U.S. Information Agency.

Chicago Style aipamena

Smith, Michael B. The Language of Trade. Washington, D.C: U.S. Information Agency, 1990.

MLA aipamena

Smith, Michael B. The Language of Trade. Washington, D.C: U.S. Information Agency, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.