(1995). Hướng dẫn học Headway: Student's book and Workbook. Tp. HCM: Nxb. Tp. HCM.
Chicago-tyylinen lähdeviittausHướng Dẫn Học Headway: Student's Book and Workbook. Tp. HCM: Nxb. Tp. HCM, 1995.
MLA-viiteHướng Dẫn Học Headway: Student's Book and Workbook. Tp. HCM: Nxb. Tp. HCM, 1995.
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