एपीए उद्धरण

(2008). Barron's practice exercises for the TOEFL iBT. Tp. Hồ Chí Minh: Trẻ.

शिकागो स्टाइल उद्धरण

Barron's Practice Exercises for the TOEFL IBT. Tp. Hồ Chí Minh: Trẻ, 2008.

एमएलए उद्धरण

Barron's Practice Exercises for the TOEFL IBT. Tp. Hồ Chí Minh: Trẻ, 2008.