Cita APA (7th ed.)

National Safety Council. (1978). Supervisors safety manual: Better production without injury and waste from accidents (5th ed.). National Safety Council.

Cita Chicago (17th ed.)

National Safety Council. Supervisors Safety Manual: Better Production Without Injury and Waste from Accidents. 5th ed. Chicago: National Safety Council, 1978.

Cita MLA (8th ed.)

National Safety Council. Supervisors Safety Manual: Better Production Without Injury and Waste from Accidents. 5th ed. National Safety Council, 1978.