1. Sustainability Assessment of Food and Agriculture Systems Guidelines Version 3.0http://www.fao.org/3/i3957e/i3957e.pdf
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3. Methods to assess farming sustainability in developing countries. A review
4. Impact of Proactive Land Acquisition Strategy (PLAS) Projects on Human Capital Livelihood of Beneficiaries in the Dr Kenneth Kaunda District in South Africa;Antwi;J. Agric. Sci.,2014
5. Linking Small Holder Farmers to Markets and the Implications for Extension and Advisory Serviceshttps://meas.illinois.edu/wp-content/uploads/2015/04/Ferris-et-al-2014-Linking-Farmers-to-Markets.-MEAS-Brief.pdf