एपीए उद्धरण

Cambridge English language assessment. (2017). Cambridge English IELTS 12 academic with answers: Authentic examination papers. England: Cambridge University press.

शिकागो स्टाइल उद्धरण

Cambridge English language assessment. Cambridge English IELTS 12 Academic With Answers: Authentic Examination Papers. England: Cambridge University press, 2017.

एमएलए उद्धरण

Cambridge English language assessment. Cambridge English IELTS 12 Academic With Answers: Authentic Examination Papers. England: Cambridge University press, 2017.