1. Agence BIO, 2013. Printemps Bio, 15th edition.
2. http://www.agencebio.org/sites/default/files/upload/documents/5_Communication/Relations_Presse/dp_conferenceptpsbio280514-def.pdf, accessed 27 July 2015.
3. Environmental strategy: Does it lead to competitive advantage in the U.S. wine industry?;Atkin;International Journal of Wine Business Research,2012
4. Bansal, P., 1999. Taking stock of ISO 14001 certifications. Final report, Washington D.C.: United States Environmental Protection Agency.
5. Firm resources and sustained competitive advantage;Barney;Journal of Management,1991