Cita APA

(2017).  Cambridge IELTS 12 Academic: Student''s Book with Answers.  Cambridge University Press ; Cambridge English Language assessment.

Citación estilo Chicago

 Cambridge IELTS 12 Academic: Student''s Book With Answers.  Cambridge University Press ; Cambridge English Language assessment, 2017.

Cita MLA

 Cambridge IELTS 12 Academic: Student''s Book With Answers.  Cambridge University Press ; Cambridge English Language assessment, 2017.