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