1. 1. International Agency for Research on Cancer (IARC), “IARC Monographs on the Evaluation of Carcinogenic Risks to Humans”, 2012, Vol. 100F, World Health Organization, Geneva.
2. 2. The Japan Society of Occupational Health, J. Occup. Health, 2016, 58, 489.
3. 3. NIOSH Pocket Guide to Chemical Hazards, ed. National Institute of Occupational Safety and Health (NIOSH), https://www.cdc.gov/niosh/docs/2005-149/default.html.
4. 4. Permissible Exposure Limits (PELs), established by California Division of Occupational Safety and Health (Cal/OSHA), http://www.dir.ca.gov/title8/5155table_ac1.html.
5. 5. ISO 14362-1, “Textiles—Methods for Determination of Certain Aromatic Amines Derived from Azo Colorants—Part 1: Detection of the Use of Certain Azo Colorants Accessible with and without Extracting the Fibres”, 2017, International Organization for Standardization, Geneva.