(1978). Supervisors Safety Manual: Better production without injury and Waste from Accidents. Chicago, Illinois: National Safety Council.
শিকাগো স্টাইলে সাইটেশনSupervisors Safety Manual: Better Production Without Injury and Waste From Accidents. Chicago, Illinois: National Safety Council, 1978.
এমএলএ সাইটেশনSupervisors Safety Manual: Better Production Without Injury and Waste From Accidents. Chicago, Illinois: National Safety Council, 1978.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.