Yancey, P. (2006). Mastering skills for the TOEFL IBT: Advanced. Thành phố Hồ Chí Minh: Trẻ.
शिकागो स्टाइल उद्धरणYancey, Patrick. Mastering Skills for the TOEFL IBT: Advanced. Thành phố Hồ Chí Minh: Trẻ, 2006.
एमएलए उद्धरणYancey, Patrick. Mastering Skills for the TOEFL IBT: Advanced. Thành phố Hồ Chí Minh: Trẻ, 2006.
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