http://www.who.int/en/

http://www.usda.gov/

http://www.coresta.org/

http://www.cdc.gov/tobacco/

http://www.worldtobacco.co.uk/

http://www.tobaccoreporter.com/

http://www.tobaccojournal.com/

http://www.tobaccoasia.com/

http://www.gosmokeshop.com/

http://www.tobaccofarmquarterly.com/

http://www.smokemag.com/

http://www.cigaraficionado.com/

http://www.tma.org/

http://www.the-tma.org.uk/

http://www.tobaccoleaf.org/

http://www.globalink.org/

http://tc.bmj.com/