Pyle, M. A. (2010). Cliffs TOEFL preparation guide: Includes all the latest changes in TOEFL (Rivised and Expanded). Thành phố Hồ Chí Minh: Trẻ.
Παραπομπή Chicago StylePyle, Michael A. Cliffs TOEFL Preparation Guide: Includes All the Latest Changes in TOEFL (Rivised and Expanded). Thành phố Hồ Chí Minh: Trẻ, 2010.
Παραπομπή MLAPyle, Michael A. Cliffs TOEFL Preparation Guide: Includes All the Latest Changes in TOEFL (Rivised and Expanded). Thành phố Hồ Chí Minh: Trẻ, 2010.
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