References on farm energy.

1. "Renewable Energy on the Farm: A Guide to Farm Energy Alternatives" by John Perlin
2. "Farm Energy: A Handbook for Energy Self-Reliance" by Michael Potts
3. "Energy Efficiency on the Farm: A Guide to Saving Energy and Money on Your Farm" by David Kammel
4. "Renewable Energy for the Farm, Home, and Business" by Harold B. Hoover
5. "Farm Energy Alternatives: A Guide to Small-Scale Sustainable Energy Production" by Paul W. Foell
6. "Energy Management for the Farm" by John W. Worley
7. "Farm Energy: A Handbook for Energy Self-Reliance" by Michael Potts
8. "Renewable Energy Technologies for the Farm and Home" by David Smead
9. "Energy Efficiency in Agriculture" by R. Lal
10. "Farm Energy: A Handbook for Energy Self-Reliance" by Michael Potts.