1. International Assessment of Agricultural Knowledge, Science and Technology for Development (2009) Agriculture at a Crossroad: Global Report. Available: http://www.unep.org/dewa/agassessment/reports/IAASTD/EN/Agriculture%20at%20a%20Crossroads_Global%20Report%20(English).pdf. Accessed 5 November 2013.
2. United Nations Conference on Sustainable Development (2012) The Future We Want: Outcome of Conference. Available: http://www.undp.org.tr/energEnvirDocs/3.The%20FutureWeWant.pdf. Accessed 5 November 2013.
3. Pretty JN, Chambers R (1994) Towards a learning paradigm: new professionalism and institutions for a sustainable agriculture. In: Scoones I, Thompson J, editors. Beyond Farmer First. London: Intermediate Technology Publications. 182–202.
4. Chambers R, Pacey A, Thrupp LA (1989) Farmer First: Farmer Innovation and Agricultural Research. London: Intermediate Technology Publications. 218 p.
5. Scoones I, Thompson J (1994) Beyond Farmer First: Rural People’s Knowledge, Agricultural Research and Extension Practice. London: Intermediate Technology Publications. 301 p.