APA-viite (7. p.)

University of Cambridge & University of Cambridge. (2021). IELTS 16 Academic: With answers : authentic practice tests. Cambridge University Press.

Chicago-viite (17. p.)

University of Cambridge ja University of Cambridge. IELTS 16 Academic: With Answers : Authentic Practice Tests. Cambridge: Cambridge University Press, 2021.

MLA-viite (9. p.)

University of Cambridge ja University of Cambridge. IELTS 16 Academic: With Answers : Authentic Practice Tests. Cambridge University Press, 2021.