Buttrick, R. (2000). Project workout: A tool kit for reaping the rewards from all your business (2nd ed.). Pearson Education Ltd.
শিকাগো স্টাইলে সাইটেশনButtrick, Robert. Project Workout: A Tool Kit for Reaping the Rewards from All Your Business. 2nd ed. London: Pearson Education Ltd, 2000.
এমএলএ সাইটেশনButtrick, Robert. Project Workout: A Tool Kit for Reaping the Rewards from All Your Business. 2nd ed. Pearson Education Ltd, 2000.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.