American Conference of Governmental Industrial Hygienists. (1978). Labeling and warning systems: Proceedings of a topical symposium, November 21 and 22, 1977, Washington, D. C. American Conference of Governmental Industrial Hygienists.
Citace podle Chicago (17th ed.)American Conference of Governmental Industrial Hygienists. Labeling and Warning Systems: Proceedings of a Topical Symposium, November 21 and 22, 1977, Washington, D. C. Cincinnati, Ohio: American Conference of Governmental Industrial Hygienists, 1978.
Citace podle MLA (8th ed.)American Conference of Governmental Industrial Hygienists. Labeling and Warning Systems: Proceedings of a Topical Symposium, November 21 and 22, 1977, Washington, D. C. American Conference of Governmental Industrial Hygienists, 1978.