(2004). Undersstanding spoken english: Book two. Tp. Hồ Chí Minh: Nxb. Tp. Hồ Chí Minh.
शिकागो स्टाइल उद्धरणUndersstanding Spoken English: Book Two. Tp. Hồ Chí Minh: Nxb. Tp. Hồ Chí Minh, 2004.
एमएलए उद्धरणUndersstanding Spoken English: Book Two. Tp. Hồ Chí Minh: Nxb. Tp. Hồ Chí Minh, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.