1. Bundesanstalt für Arbeitsschutz und Arbeitsmedizin (Ed.) 2003 Volkswirtschaftliche kosten durch Arbeitsunfähigkeit (The cost of work-related diseases in Germany) 2001 Available online at: http://www.baua.de/info/statistik/stat_2001/kosten2001.pdf
2. Business for Social Responsibility 2003 http://www.bsr.org
3. Coalition for Environmentally Responsible Economics 2003 Global reporting initiative Available online at: http://www.globalreporting.org
4. Dow Jones & Company 2003 Dow Jones Sustainability Indexes Available online at: http://www.sustainability-index.com
5. European Commission 2001Promoting a European Framework for Corporate Social Responsibility– Green Paper Available online at http://europe.eu.int/comm/employment_social/soc-dial/csr/greenpaper_en.pdf