1. Agyei-Holmes, A. (2014) Tilling the Soil in Tanzania: What Do Emerging Economies Have to Offer?. Milton Keynes, UK: Unpublished PhD Thesis, the Open University.
2. American Society of Agricultural Engineers (1998) Agricultural Machinery Management. St. Joseph. MI: American Society of Agricultural Engineers.
3. Bank Of Tanzania (2012) Annual Report 2010/2011: Director of Economic Research and Policy. Dar es Salaam: Bank of Tanzania.
4. Biggs, S., Justice, S. and Lewis, D. (2011) Patterns of rural mechanisation, energy and employment in South Asia: Reopening the debate. Economic and Political Weekly pp. 78–82.
5. Carr, M. (1985) The AT Reader: Theory and Practice in Appropriate Technology. Bath: The Pitman Press.