APA (7e ed.) Bronvermelding

Cambridge ESOL. (2009). Examination papers from University of Cambridge ESOL Examinations: English for speakers of other languages: Cambridge ESOL.

Chicago (17e ed.) Bronvermelding

Cambridge ESOL. Examination Papers from University of Cambridge ESOL Examinations: English for Speakers of Other Languages: Cambridge ESOL. Cambridge University Press, 2009.

MLA (9e ed.) Bronvermelding

Cambridge ESOL. Examination Papers from University of Cambridge ESOL Examinations: English for Speakers of Other Languages: Cambridge ESOL. 2009.