Norman, S. (1984). We're in business : english for commercial practice and international trade: Student's book ([3rd. imp.].). London: Longman.
Citación estilo ChicagoNorman, Susan. We're in Business : English for Commercial Practice and International Trade: Student's Book. [3rd. imp.]. London: Longman, 1984.
Cita MLANorman, Susan. We're in Business : English for Commercial Practice and International Trade: Student's Book. [3rd. imp.]. London: Longman, 1984.
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