Tracy, B. (2015). Thuật quản lý thời gian =: Time management. Hà Nội: Thế giới.
শিকাগো স্টাইলে সাইটেশনTracy, Brian. Thuật Quản Lý Thời Gian =: Time Management. Hà Nội: Thế giới, 2015.
এমএলএ সাইটেশনTracy, Brian. Thuật Quản Lý Thời Gian =: Time Management. Hà Nội: Thế giới, 2015.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.