Tứ Anh. (1999). English 11: Student's book. Hà Nội: Giáo Dục.
Παραπομπή Chicago StyleTứ Anh. English 11: Student's Book. Hà Nội: Giáo Dục, 1999.
Παραπομπή MLATứ Anh. English 11: Student's Book. Hà Nội: Giáo Dục, 1999.
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