National Safety Council. (1956). Supervisors safety manual; better production without injury and waste from accidents. s.n.
Citace podle Chicago (17th ed.)National Safety Council. Supervisors Safety Manual; Better Production Without Injury and Waste from Accidents. Chicago: s.n, 1956.
Citace podle MLA (9th ed.)National Safety Council. Supervisors Safety Manual; Better Production Without Injury and Waste from Accidents. s.n, 1956.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..