Cambridge ESOL. (2009). Examination papers from University of Cambridge ESOL Examinations: English for speakers of other languages: Cambridge ESOL.
Chicago-referens (17:e uppl.)Cambridge ESOL. Examination Papers from University of Cambridge ESOL Examinations: English for Speakers of Other Languages: Cambridge ESOL. Cambridge University Press, 2009.
MLA-referens (9:e uppl.)Cambridge ESOL. Examination Papers from University of Cambridge ESOL Examinations: English for Speakers of Other Languages: Cambridge ESOL. 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.