1. Faith , W. L.
Keyes , D. B. and
Clark , R. L. 1965. Industrial Chemicals, 3rd Ed., 330New York, N. Y.: John Wiley and Sons, Inc.
2. 1966. Union Carbide Chemicals Division, Ethanolamines, Booklet F-4U75A., 270Park Avenue, New York, N.Y.: Union Carbide Corporation, Chemicals Division. 10017
3. 1967. American Conference of Governmental Industrial Hygienists: Threshold Limit Values for 1967., 1014Broadway, Cincinnati, Ohio: American Conference of Governmental Industrial Hygienists. 45202
4. Committee on Threshold Limit Values: Documentation of Threshold Limit Values., Revised Ed., 101476Broadway, Cincinnati, Ohio: American Conference of Governmental Industrial Hygienists. 45202