1. Occupational Safety and Health Administration (OSHA). Toxic and hazardous substances: air contaminants. 29 CFR 1910.1000. Accessed June 16 2021.https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000
2. Occupational Safety and Health Administration (OSHA). Toxic and hazardous substances. 29 CFR 1910 Subpart Z. Accessed June 16 2021.https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910SubpartZ
3. Occupational Safety and Health Administration (OSHA). Standard Interpretations: 1910.1000. Accessed June 16 2021.https://www.osha.gov/laws-regs/standardinterpretations/standardnumber/1910/1910.1000%20-%20Index/result
4. Occupational Safety and Health Administration (OSHA). Safety and Health Topics: Chemical Hazards and Toxic Substances. Accessed June 16 2021.https://www.osha.gov/chemical-hazards
5. National Institute for Occupational Safety and Health (NIOSH). NIOSH Pocket Guide to Chemical Hazards. Accessed June 16 2021.https://www.cdc.gov/niosh/npg