Wood, I. (2001). Pass Cambridge BEC Vantage: Work book with answer key. Summertown Publishing.
Chicago-referens (17:e uppl.)Wood, Ian. Pass Cambridge BEC Vantage: Work Book with Answer Key. Oxford: Summertown Publishing, 2001.
MLA-referens (8:e uppl.)Wood, Ian. Pass Cambridge BEC Vantage: Work Book with Answer Key. Summertown Publishing, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.