Tracy, B., & Brian Tracy; Anh Tuấn. (2016). Thuật bán hàng. Hà Nội: Thế giới,Công ty Sách Alpha.
শিকাগো স্টাইলে সাইটেশনTracy, Brian, এবং Brian Tracy; Anh Tuấn. Thuật Bán Hàng. Hà Nội: Thế giới,Công ty Sách Alpha, 2016.
এমএলএ সাইটেশনTracy, Brian, এবং Brian Tracy; Anh Tuấn. Thuật Bán Hàng. Hà Nội: Thế giới,Công ty Sách Alpha, 2016.
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