1. FAO Organic Agriculturehttp://www.fao.org/organicag/oa-faq/oa-faq2/en/
2. European Commission Becoming an Organic Farmerhttps://ec.europa.eu/info/food-farming-fisheries/farming/organic-farming/becoming-organic-farmer_en
3. MiPAAF Elenco Organismi di Controllo Autorizzati per le Produzioni Biologichehttps://www.politicheagricole.it/flex/cm/pages/ServeAttachment.php/L/IT/D/d%252Ff%252F1%252FD.95c0bcf72943e07b39bb/P/BLOB%3AID%3D6189/E/pdf
4. Organic Agriculture: A Global Perspective;Kristiansen,2006
5. Genetic Resources, International Organizations, and Improvement in Rice Varieties*