LinguaForum. (2011). Frequency #1 TOEFL vocabulary advanced. T.P. Hồ Chí Minh: Tổng hợp T.P. Hồ Chí Minh; Công ty TNHH Nhân Trí Việt.
শিকাগো স্টাইলে সাইটেশনLinguaForum. Frequency #1 TOEFL Vocabulary Advanced. T.P. Hồ Chí Minh: Tổng hợp T.P. Hồ Chí Minh; Công ty TNHH Nhân Trí Việt, 2011.
এমএলএ সাইটেশনLinguaForum. Frequency #1 TOEFL Vocabulary Advanced. T.P. Hồ Chí Minh: Tổng hợp T.P. Hồ Chí Minh; Công ty TNHH Nhân Trí Việt, 2011.
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