Tracy, B. (2014). Thuật lãnh đạo. Thế giới.
শিকাগো স্টাইলে সাইটেশনTracy, Brian. Thuật Lãnh đạo. Thế giới, 2014.
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Tracy, B. (2014). Thuật lãnh đạo. Thế giới.
শিকাগো স্টাইলে সাইটেশনTracy, Brian. Thuật Lãnh đạo. Thế giới, 2014.
এমএলএ সাইটেশনTracy, Brian. Thuật Lãnh đạo. Thế giới, 2014.