1. WHO – World Health Organisation
, WHO Guidelines for Indoor Air Quality: Selected Pollutants, WHO Regional Office for Europe, 2010
2. EC – European Commission
, Indoor Air Pollution: New EU Research Reveals Higher Risks than Previously Thought, Joint Research Center, 2003
3. WHO – World Health Organisation
, Combined or Multiple Exposure to Health Stressors in Indoor Built Environments, WHO Regional Office for Europe, 2013
4. EPA – Environmental Protection Agency
, Volatile Organic Compounds' Impact on Indoor Air Quality, United States Environmental Protection Agency, 2016
5. NIH
, Volatile Organic Compounds (VOCs), U.S. National Library of Medicine, 2016