Linguaforum. (2010). A1 TOEFL IBT: Speaking. Tp.Hồ Chí Minh: Trẻ;Kelt.
Trích dẫn kiểu ChicagoLinguaforum. A1 TOEFL IBT: Speaking. Tp.Hồ Chí Minh: Trẻ;Kelt, 2010.
Deismireacht MLALinguaforum. A1 TOEFL IBT: Speaking. Tp.Hồ Chí Minh: Trẻ;Kelt, 2010.
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