Cita APA (7a ed.)

Norman, S. (1994). We're in business: English for commercial practice and international trade : students' book. Longman.

Cita Chicago Style (17a ed.)

Norman, Susan. We're in Business: English for Commercial Practice and International Trade : Students' Book. Essex: Longman, 1994.

Cita MLA (9a ed.)

Norman, Susan. We're in Business: English for Commercial Practice and International Trade : Students' Book. Longman, 1994.