Codex Alimentarius Commission (CAC). Principles for the risk analysis of foods derived from modern biotechnology. CAC/GL. 2003, 44, 2003, 1-4
Codex Alimentarius Commission (CAC). Guideline for the conduct of food safety assessment of foods derived from recombinant-DNA plants. CAC/GL. 2003, 45, 2003, 1-13
Codex Alimentarius Commission (CAC). Guideline for the conduct of food safety assessment of foods produced using recombinant-DNA microorganisms. CAC/GL. 2003, 46, 2003, 1-17
International Service for the Acquisition of Agri-biotech Applications (ISAAA). Executive summary, Global status of commercialized biotech/GM crops 2004. http://www.isaaa.org/. 2004
National Agricultural Statistics Service. Acreage. http://www.nass.usda.gov/. 2004