Norman S. Susan. (1990). We 're in Business. English for Commercial Practice and International trade: Students Book. London, Longman, 1990.
Chicago-referens (17:e uppl.)Norman S. Susan. We 'Re in Business. English for Commercial Practice and International Trade: Students Book. London, Longman, 1990, 1990.
MLA-referens (9:e uppl.)Norman S. Susan. We 'Re in Business. English for Commercial Practice and International Trade: Students Book. London, Longman, 1990, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.