Link, W., Poirier, S., Putlack, M. A., & Lê, H. L. (2008). How to master skills for the TOEFL IBT Speaking intermediate. T.P. Hồ Chí Minh: Tổng hợp T.P. Hồ Chí Minh.
শিকাগো স্টাইলে সাইটেশনLink, Will, Stephen Poirier, Michael A. Putlack, এবং Huy Lâm Lê. How to Master Skills for the TOEFL IBT Speaking Intermediate. T.P. Hồ Chí Minh: Tổng hợp T.P. Hồ Chí Minh, 2008.
এমএলএ সাইটেশনLink, Will, Stephen Poirier, Michael A. Putlack, এবং Huy Lâm Lê. How to Master Skills for the TOEFL IBT Speaking Intermediate. T.P. Hồ Chí Minh: Tổng hợp T.P. Hồ Chí Minh, 2008.
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