Zeimetz, K. A. (1979). Growing energy: Land for biomass farms. Dept. of Agriculture, Economics, Statistics, and Cooperatives Service.
Cita Chicago (17th ed.)Zeimetz, Kathryn A. Growing Energy: Land for Biomass Farms. [Washington]: Dept. of Agriculture, Economics, Statistics, and Cooperatives Service, 1979.
Cita MLA (8th ed.)Zeimetz, Kathryn A. Growing Energy: Land for Biomass Farms. Dept. of Agriculture, Economics, Statistics, and Cooperatives Service, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.