American Conference of Governmental Industrial Hygienists & LaNier, M. E. (1984). Threshold limit values: Discussion and thirty-five year index with recommendations. American Conference of Governmental Industrial Hygienists.

American Conference of Governmental Industrial Hygienists and Marshall E. LaNier. Threshold Limit Values: Discussion and Thirty-five Year Index with Recommendations. Cincinnati, Ohio: American Conference of Governmental Industrial Hygienists, 1984.

American Conference of Governmental Industrial Hygienists and Marshall E. LaNier. Threshold Limit Values: Discussion and Thirty-five Year Index with Recommendations. American Conference of Governmental Industrial Hygienists, 1984.