Global Corruption Report 2009 (Arkistoitu – Internet Archive), Corruption and the Private Sector, Transparency International elokuu 2009, s. 6 lista 200-203, s. 400
media.transparency.org
[1] (Arkistoitu – Internet Archive) Transparency International’s 2009 Global Corruption Barometer June 2009 TI
web.archive.org
Global Corruption Report 2009 (Arkistoitu – Internet Archive), Corruption and the Private Sector, Transparency International elokuu 2009, s. 6 lista 200-203, s. 400