एपीए उद्धरण

(2004). Undersstanding spoken english: Book two. Tp. Hồ Chí Minh: Nxb. Tp. Hồ Chí Minh.

शिकागो स्टाइल उद्धरण

Undersstanding Spoken English: Book Two. Tp. Hồ Chí Minh: Nxb. Tp. Hồ Chí Minh, 2004.

एमएलए उद्धरण

Undersstanding Spoken English: Book Two. Tp. Hồ Chí Minh: Nxb. Tp. Hồ Chí Minh, 2004.