Cita APA (7th ed.)

Sweeney, S. (2003). English for business communication (2ª ed.). Cambridge University Press.

Cita Chicago (17th ed.)

Sweeney, Simon. English for Business Communication. 2ª ed. Cambridge: Cambridge University Press, 2003.

Cita MLA (9th ed.)

Sweeney, Simon. English for Business Communication. 2ª ed. Cambridge University Press, 2003.