Cornelsen. (2009). Interactive Languages Course Business English Meetings (Kèm trực tiếp sách). Nhân Trí Việt.
শিকাগো স্টাইলে সাইটেশনCornelsen. Interactive Languages Course Business English Meetings (Kèm Trực Tiếp Sách). Nhân Trí Việt, 2009.
এমএলএ সাইটেশনCornelsen. Interactive Languages Course Business English Meetings (Kèm Trực Tiếp Sách). Nhân Trí Việt, 2009.
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