1. Alexandratos, N., & Bruinsma, J. (2012). World agriculture towards 2030/2050: The 2012 revision. ESA Working paper No. 12–03. Rome: FAO.
2. Alliance for Water Stewardship. (2014). The AWS International Water Stewardship Standard. http://www.allianceforwaterstewardship.org/become-a-water-steward.html#aws-standard . Accessed 21 Aug 2014.
3. Amarasinghe, U., Smakhtin, V., Sharma, B. R. & Eriyagama, N. (2010). Water footprints of milk production: A case study in the Moga District of Punjab, India. Project report submitted to Nestle Ltd. under the project “Measuring the water footprints of milk production: Contributions to livelihood benefits and sustainable water use in the Moga District in Punjab, India.” Colombo, Sri Lanka: International Water Management Institute. 42p.
4. Beddington, J. (2011). Food, energy, water and the climate: A perfect storm of global events? www.populationinstitute.org/external/files/reports/The_Perfect_Storm_Scenario_for_2030.pdf . Accessed 4 Sept 2014.
5. Bhaskaran, S., Polonsky, M., Cary, J. & Fernandez, S. (2006). Environmentally sustainable food production and marketing: Opportunity or hype? British Food Journal, 108 (8), 677-90. www.georgemorris.org/publications/file.aspx?id=dd70c322-cd21-4d9c-9ae2-d36d434d3214 . Accessed Oct 2014.