1. IHS Chemical. Toluene [Internet]. 2013 [cited 2014 Feb 9]. Available from: http://www.ihs.com/products/chemical/planning/ceh/toluene.aspx.
2. Office of the National Economic and Social Development Board. The Economic Performance in Q1 and Outlook for 2013 [Internet]. 2013 [cited 2014 Mar 28]. Available from: http://www.nesdb.go.th/.
3. Department of International Trade Promotion. Thailand's Furniture Industry [Internet]. 2014 [cited 2014 Mar 28]. Available from: http://www.thaitradeusa.com/home/?page_id=2729.
4. Brueck SE, Ramsey J, Rodriguez M, Adebayo A. NIOSH puts health hazard to bed and metal furniture [Internet]. 2013 [cited 2014 Mar 28]. Available from: http://ehstoday.com/health/niosh-puts-health-hazards-bed-metal-furniture-manufacturer.
5. U.S. National Library of Medicine. Toluene [Internet]. 2013 [cited 2014 Mar 28]. Available from: http://toxtown.nlm.nih.gov/text_version/chemicals.php?id=30.