Cita APA (7th ed.)

Cambridge ESOL. (2009). Student's Book with Answers: Examination Papers from University of Cambridge ESOL Examinations: Cambridge ESOL.

Cita Chicago (17th ed.)

Cambridge ESOL. Student's Book with Answers: Examination Papers from University of Cambridge ESOL Examinations: Cambridge ESOL. Cambridge University Press, 2009.

Cita MLA (9th ed.)

Cambridge ESOL. Student's Book with Answers: Examination Papers from University of Cambridge ESOL Examinations: Cambridge ESOL. 2009.