Citazione Stile APA (7a Edizione)

University of Cambridge ESOL Examinations. (2007). Cambridge IELTS 6 Student's Book with Answers: Examination papers from University of Cambridge ESOL Examinations. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

University of Cambridge ESOL Examinations. Cambridge IELTS 6 Student's Book with Answers: Examination Papers from University of Cambridge ESOL Examinations. Cambridge: Cambridge University Press, 2007.

Citatione MLA (9a ed.)

University of Cambridge ESOL Examinations. Cambridge IELTS 6 Student's Book with Answers: Examination Papers from University of Cambridge ESOL Examinations. Cambridge University Press, 2007.