एपीए उद्धरण

Lougheed, L. (2012). Barron's IELTS: International English language testing system (2nd edition.). Tp.HCM: Nxb. Tổng hợp Tp.HCM.

शिकागो स्टाइल उद्धरण

Lougheed, Lin. Barron's IELTS: International English Language Testing System. 2nd edition. Tp.HCM: Nxb. Tổng hợp Tp.HCM, 2012.

एमएलए उद्धरण

Lougheed, Lin. Barron's IELTS: International English Language Testing System. 2nd edition. Tp.HCM: Nxb. Tổng hợp Tp.HCM, 2012.