(2009). How to master skills for the TOEFL iBT speaking: Basic. Tp. Hồ Chí Minh: Tổng hợp.
शिकागो स्टाइल उद्धरणHow to Master Skills for the TOEFL IBT Speaking: Basic. Tp. Hồ Chí Minh: Tổng hợp, 2009.
एमएलए उद्धरणHow to Master Skills for the TOEFL IBT Speaking: Basic. Tp. Hồ Chí Minh: Tổng hợp, 2009.
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