Tracy, B., Thư Trang,, & Thanh Huyền. (2012). Kết thúc bán hàng - Đòn quyết định =: Art of closing the sale - The key to making more money faster in the world of professinal selling. H.: Lao động - Xã hội.
শিকাগো স্টাইলে সাইটেশনTracy, Brian., Thư Trang, এবং Thanh Huyền. Kết Thúc Bán Hàng - Đòn Quyết định =: Art of Closing the Sale - The Key to Making More Money Faster in the World of Professinal Selling. H.: Lao động - Xã hội, 2012.
এমএলএ সাইটেশনTracy, Brian., Thư Trang, এবং Thanh Huyền. Kết Thúc Bán Hàng - Đòn Quyết định =: Art of Closing the Sale - The Key to Making More Money Faster in the World of Professinal Selling. H.: Lao động - Xã hội, 2012.
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