Daubenmire, R. F. (1970). Steppe vegetation of Washington. Washington Agricultural Experiment Station.
Cita Chicago (17th ed.)Daubenmire, R. F. Steppe Vegetation of Washington. Pullman: Washington Agricultural Experiment Station, 1970.
Cita MLA (8th ed.)Daubenmire, R. F. Steppe Vegetation of Washington. Washington Agricultural Experiment Station, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.